The British Isles are a group of islands in the

North Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the "Old World" of Africa, Europe an ...

off the north-western coast of continental Europe, consisting of the islands of

Great Britain Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. With an area of , it is the largest of the British Isles, the largest European island and the ninth-largest island in the world. It i ...

Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...

, the

Isle of Man ) , anthem = "O Land of Our Birth" , image = Isle of Man by Sentinel-2.jpg , image_map = Europe-Isle_of_Man.svg , mapsize = , map_alt = Location of the Isle of Man in Europe , map_caption = Location of the Isle of Man (green) in Europe ...

, the Inner and Outer

Hebrides The Hebrides (; gd, Innse Gall, ; non, Suðreyjar, "southern isles") are an archipelago off the west coast of the Scottish mainland. The islands fall into two main groups, based on their proximity to the mainland: the Inner and Outer Hebr ...

, the

Northern Isles The Northern Isles ( sco, Northren Isles; gd, Na h-Eileanan a Tuath; non, Norðreyjar; nrn, Nordøjar) are a pair of archipelagos off the north coast of mainland Scotland, comprising Orkney and Shetland. They are part of Scotland, as are th ...

, and over six thousand smaller islands."British Isles", ''

Encyclopædia Britannica The (Latin for "British Encyclopædia") is a general knowledge English-language encyclopaedia. It is published by Encyclopædia Britannica, Inc.; the company has existed since the 18th century, although it has changed ownership various t ...

''. They have a total area of and a combined population of almost 72 million, and include two

sovereign state A sovereign state or sovereign country, is a political entity represented by one central government that has supreme legitimate authority over territory. International law defines sovereign states as having a permanent population, defined te ...

s, the

Republic of Ireland Ireland ( ga, Éire ), also known as the Republic of Ireland (), is a country in north-western Europe consisting of 26 of the 32 Counties of Ireland, counties of the island of Ireland. The capital and largest city is Dublin, on the eastern ...

(which covers roughly five-sixths of Ireland), and the

United Kingdom of Great Britain and Northern Ireland The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

. The

Channel Islands The Channel Islands ( nrf, Îles d'la Manche; french: îles Anglo-Normandes or ''îles de la Manche'') are an archipelago in the English Channel, off the French coast of Normandy. They include two Crown Dependencies: the Bailiwick of Jersey, ...

, off the north coast of

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...

, are normally taken to be part of the British Isles, even though they do not form part of the archipelago. The oldest rocks are 2.7 billion years old and are found in Ireland, Wales and the northwest of Scotland. During the Silurian period, the north-western regions collided with the south-east, which had been part of a separate continental landmass. The topography of the islands is modest in scale by global standards.

Ben Nevis Ben Nevis ( ; gd, Beinn Nibheis ) is the highest mountain in Scotland, the United Kingdom and the British Isles. The summit is above sea level and is the highest land in any direction for . Ben Nevis stands at the western end of the Grampian ...

, the highest mountain, rises to only , and Lough Neagh, which is notably larger than other lakes in the island group, covers . The climate is temperate marine, with cool winters and warm summers. The

North Atlantic drift The North Atlantic Current (NAC), also known as North Atlantic Drift and North Atlantic Sea Movement, is a powerful warm western boundary current within the Atlantic Ocean that extends the Gulf Stream northeastward. The NAC originates from where ...

brings significant moisture and raises temperatures above the global average for the latitude. This led to a landscape that was long dominated by temperate rainforest, although human activity has since cleared the vast majority of

forest cover Forest cover is the amount of forest that covers a particular area of land. It may be measured as relative (in percent) or absolute (in square kilometres/square miles). Around a third of the world's surface is covered with forest, with closed-canop ...

. The region was re-inhabited after the last glacial period of

Quaternary glaciation The Quaternary glaciation, also known as the Pleistocene glaciation, is an alternating series of glacial and interglacial periods during the Quaternary period that began 2.58 Ma (million years ago) and is ongoing. Although geologists describ ...

, by 12,000 BC, when Great Britain was still part of a peninsula of the European continent. Ireland was only connected to Great Britain by way of an

ice bridge An ice bridge is a frozen natural structure formed over seas, bays, rivers or lake surfaces. They facilitate migration of animals or people over a water body that was previously uncrossable by terrestrial animals, including humans. The most sig ...

ending by 14,000 BC, and was not inhabited until after 8000 BC. Great Britain became an island by 7000 BC with the flooding of Doggerland. The Hiberni (Ireland),

Picts The Picts were a group of peoples who lived in what is now northern and eastern Scotland (north of the Firth of Forth) during Late Antiquity and the Early Middle Ages. Where they lived and what their culture was like can be inferred from e ...

(northern Great Britain) and

Britons British people or Britons, also known colloquially as Brits, are the citizens of the United Kingdom of Great Britain and Northern Ireland, the British Overseas Territories, and the Crown dependencies.: British nationality law governs mod ...

(southern Great Britain), all speaking

Insular Celtic languages Insular Celtic languages are the group of Celtic languages of Brittany, Great Britain, Ireland, and the Isle of Man. All surviving Celtic languages are in the Insular group, including Breton, which is spoken on continental Europe in Brittany, ...

, inhabited the islands at the beginning of the 1st millennium BC. Much of Brittonic-occupied Britain was conquered by the Roman Empire from AD 43. The first

Anglo-Saxons The Anglo-Saxons were a Cultural identity, cultural group who inhabited England in the Early Middle Ages. They traced their origins to settlers who came to Britain from mainland Europe in the 5th century. However, the ethnogenesis of the Anglo- ...

arrived as Roman power waned in the 5th century, and eventually they dominated the bulk of what is now England.

Viking Vikings ; non, víkingr is the modern name given to seafaring people originally from Scandinavia (present-day Denmark, Norway and Sweden), who from the late 8th to the late 11th centuries raided, pirated, traded and se ...

invasions began in the 9th century, followed by more permanent settlements and political change, particularly in England. The

Norman Norman or Normans may refer to: Ethnic and cultural identity * The Normans, a people partly descended from Norse Vikings who settled in the territory of Normandy in France in the 10th and 11th centuries ** People or things connected with the Norm ...

conquest of England in 1066 and the later

Angevin Angevin or House of Anjou may refer to: *County of Anjou or Duchy of Anjou, a historical county, and later Duchy, in France **Angevin (language), the traditional langue d'oïl spoken in Anjou **Counts and Dukes of Anjou * House of Ingelger, a Frank ...

partial conquest of Ireland from 1169 led to the imposition of a new Norman ruling elite across much of Britain and parts of Ireland. By the

Late Middle Ages The Late Middle Ages or Late Medieval Period was the period of European history lasting from AD 1300 to 1500. The Late Middle Ages followed the High Middle Ages and preceded the onset of the early modern period (and in much of Europe, the Renai ...

, Great Britain was separated into the Kingdom of England and Kingdom of Scotland, while control in Ireland fluxed between Gaelic kingdoms, Hiberno-Norman lords and the English-dominated

Lordship of Ireland The Lordship of Ireland ( ga, Tiarnas na hÉireann), sometimes referred to retroactively as Norman Ireland, was the part of Ireland ruled by the King of England (styled as "Lord of Ireland") and controlled by loyal Anglo-Norman lords between ...

, soon restricted only to

The Pale The Pale (Irish: ''An Pháil'') or the English Pale (' or ') was the part of Ireland directly under the control of the English government in the Late Middle Ages. It had been reduced by the late 15th century to an area along the east coast st ...

. The 1603

Union of the Crowns The Union of the Crowns ( gd, Aonadh nan Crùintean; sco, Union o the Crouns) was the accession of James VI of Scotland to the throne of the Kingdom of England as James I and the practical unification of some functions (such as overseas dip ...

, Acts of Union 1707 and

Acts of Union 1800 The Acts of Union 1800 (sometimes incorrectly referred to as a single 'Act of Union 1801') were parallel acts of the Parliament of Great Britain and the Parliament of Ireland which united the Kingdom of Great Britain and the Kingdom of Ir ...

aimed to consolidate Great Britain and Ireland into a single political unit, the United Kingdom of Great Britain and Ireland, with the Isle of Man and the Channel Islands remaining as Crown Dependencies. The expansion of the British Empire and migrations following the

Irish Famine The Great Famine ( ga, an Gorta Mór ), also known within Ireland as the Great Hunger or simply the Famine and outside Ireland as the Irish Potato Famine, was a period of starvation and disease in Ireland from 1845 to 1852 that constituted a h ...

and Highland Clearances resulted in the dispersal of some of the islands' population and culture throughout the world, and rapid depopulation of Ireland in the second half of the 19th century. Most of Ireland seceded from the United Kingdom after the Irish War of Independence and the subsequent

Anglo-Irish Treaty The 1921 Anglo-Irish Treaty ( ga , An Conradh Angla-Éireannach), commonly known in Ireland as The Treaty and officially the Articles of Agreement for a Treaty Between Great Britain and Ireland, was an agreement between the government of the ...

(1919–1922), with six counties remaining in the UK as Northern Ireland. In Ireland, the term "British Isles" is

controversial Controversy is a state of prolonged public dispute or debate, usually concerning a matter of conflicting opinion or point of view. The word was coined from the Latin ''controversia'', as a composite of ''controversus'' – "turned in an opposite d ...

, and there are objections to its usage. The

Government of Ireland The Government of Ireland ( ga, Rialtas na hÉireann) is the cabinet that exercises executive authority in Ireland. The Constitution of Ireland vests executive authority in a government which is headed by the , the head of government. The gover ...

does not officially recognise the term,Written Answers – Official Terms"
, Dáil Éireann, Volume 606, 28 September 2005. In his response, the Irish Minister for Foreign Affairs stated that "The British Isles is not an officially recognised term in any legal or inter-governmental sense. It is without any official status. The Government, including the Department of Foreign Affairs, does not use this term. Our officials in the Embassy of Ireland, London, continue to monitor the media in Britain for any abuse of the official terms as set out in the Constitution of Ireland and in legislation. These include the name of the State, the President,

Taoiseach The Taoiseach is the head of government, or prime minister, of Ireland. The office is appointed by the president of Ireland upon the nomination of Dáil Éireann (the lower house of the Oireachtas, Ireland's national legislature) and the o ...

and others." and its embassy in London discourages its use. Britain and Ireland is used as an alternative description, and Atlantic Archipelago has also seen limited use in academia.

Etymology

The earliest known references to the islands as a group appeared in the writings of seafarers from the ancient Greek colony of Massalia. Foster, p. 1. The original records have been lost; however, later writings, e.g.

Avienius Postumius Rufius Festus Avienius (sometimes erroneously Avienus) was a Latin writer of the 4th century AD. He was a native of Volsinii in Etruria, from the distinguished family of the Rufii Festi. Avienius is not identical with the historian ...

's '' Ora maritima'', that quoted from the

Massaliote Periplus The Massaliote Periplus or Massiliote Periplus is a theoretical reconstruction of a sixth-century BC periplus, or sailing manual, proposed by Adolf Schulten.The Extraordinary Voyage of Pytheas the Greek: The Man Who Discovered Britain (2001), Walke ...

(6th century BC) and from Pytheas's ''On the Ocean'' (around 325–320 BC) have survived. In the 1st century BC, Diodorus Siculus has ''Prettanikē nēsos'',Diodorus Siculus' ''Bibliotheca Historica'' Book V. Chapter XXI. Section
Greek text
at the

Perseus Project The Perseus Project is a digital library project of Tufts University, which assembles digital collections of humanities resources. Version 4.0 is also known as the "Perseus Hopper", and it is hosted by the Department of Classical Studies. The proj ...

. "the British Island", and ''Prettanoi'',Diodorus Siculus' ''Bibliotheca Historica'' Book V. Chapter XXI. Section
Greek text
at the

. "the Britons".

Allen Allen, Allen's or Allens may refer to: Buildings * Allen Arena, an indoor arena at Lipscomb University in Nashville, Tennessee * Allen Center, a skyscraper complex in downtown Houston, Texas * Allen Fieldhouse, an indoor sports arena on the Unive ...

, p. 172–174. Strabo used Βρεττανική (''Brettanike''),Strabo's ''Geography'' Book I. Chapter IV. Section
Greek text
an
English translation
at the

.Strabo's ''Geography'' Book IV. Chapter II. Section
Greek text
an
English translation
at the

.Strabo's ''Geography'' Book IV. Chapter IV. Section
Greek text
an
English translation
at the

. and

Marcian of Heraclea Marcian of Heraclea ( grc-gre, Μαρκιανὸς Ἡρακλεώτης, ''Markianòs Hērakleṓtēs''; la, Marcianus Heracleënsis; fl. century AD) was a minor Greek geographer from Heraclea Pontica in Late Antiquity. His known works are: * ...

, in his ''Periplus maris exteri'', used αἱ Πρεττανικαί νῆσοι (''the Prettanic Isles'') to refer to the islands. Greek text and Latin Translation thereof archived at the

Open Library Open Library is an online project intended to create "one web page for every book ever published". Created by Aaron Swartz, Brewster Kahle, Alexis Rossi, Anand Chitipothu, and Rebecca Malamud, Open Library is a project of the Internet Archive, ...

Project. Historians today, though not in absolute agreement, largely agree that these Greek and Latin names were probably drawn from native Celtic-language names for the archipelago. Along these lines, the inhabitants of the islands were called the Πρεττανοί (''

Priteni The Cruthin (; mga, Cruithnig or ; ga, label= Modern Irish, Cruithne ) were a people of early medieval Ireland. Their heartland was in Ulster and included parts of the present-day counties of Antrim, Down and Londonderry. They are also said ...

'' or ''Pretani''). The shift from the "P" of ''Pretannia'' to the "B" of ''

Britannia Britannia () is the national personification of Britain as a helmeted female warrior holding a trident and shield. An image first used in classical antiquity, the Latin ''Britannia'' was the name variously applied to the British Isles, Great ...

'' by the Romans occurred during the time of Julius Caesar. Snyder, p. 12.

Greco-Egyptian The Egyptiotes, also known as Egyptian Greeks ( el, Αιγυπτιώτες), have existed from the Hellenistic period until the aftermath of the Egyptian revolution of 1952, when most were forced to leave. Antiquity Greeks have been present in ...

Claudius Ptolemy Claudius Ptolemy (; grc-gre, Πτολεμαῖος, ; la, Claudius Ptolemaeus; AD) was a mathematician, astronomer, astrologer, geographer, and music theorist, who wrote about a dozen scientific treatises, three of which were of importa ...

referred to the larger island as ''great Britain'' (μεγάλη Βρεττανία ''megale Brettania'') and to Ireland as ''little Britain'' (μικρὰ Βρεττανία ''mikra Brettania'') in his work '' Almagest'' (147–148 AD). In his later work, ''

Geography Geography (from Greek: , ''geographia''. Combination of Greek words ‘Geo’ (The Earth) and ‘Graphien’ (to describe), literally "earth description") is a field of science devoted to the study of the lands, features, inhabitants, an ...

'' (c. 150 AD), he gave these islands the names '' Alwion'', '' Iwernia'', and ''Mona'' (the Isle of Man), suggesting these may have been names of the individual islands not known to him at the time of writing ''Almagest''. The name ''Albion'' appears to have fallen out of use sometime after the Roman conquest of Great Britain, after which ''Britain'' became the more commonplace name for the island called Great Britain in the English language. However, the cognate 'alba' has given its name to Scotland in most Celtic languages : Alba in Scottish Gaelic, Albey in Manx, Albain in Irish and Alban in Cornish and Welsh. The earliest known use of the phrase ''Brytish Iles'' in the English language is dated 1577 in a work by John Dee.John Dee, 1577. 1577 J. ''Arte Navigation'', p. 65 "The syncere Intent, and faythfull Aduise, of Georgius Gemistus Pletho, was, I could..frame and shape very much of Gemistus those his two Greek Orations..for our Brytish Iles, and in better and more allowable manner." From the OED, s.v. "British Isles" Today, this name is seen by some as carrying imperialist overtones although it is still commonly used. Other names used to describe the islands include the ''

Anglo-Celtic Anglo-Celtic people are descended primarily from British and Irish people. The concept is mainly relevant outside of Great Britain and Ireland, particularly in Australia, but is also used in Canada, the United States, New Zealand and South Africa, ...

Isles'', ''Atlantic archipelago'' (a term coined by the historian J. G. A. Pocock in 1975), ''British-Irish Isles'',''Britain and Ireland'', ''UK and Ireland'', and ''British Isles and Ireland''. Owing to political and national associations with the word ''British'', the Government of Ireland does not use the term ''British Isles'' and in documents drawn up jointly between the British and Irish governments, the archipelago is referred to simply as "these islands". British Isles is still the most widely accepted term for the archipelago.

Geography

The British Isles lie at the juncture of several regions with past episodes of tectonic mountain building. These

orogenic belts Orogeny is a mountain building process. An orogeny is an event that takes place at a convergent plate margin when plate motion compresses the margin. An ''orogenic belt'' or ''orogen'' develops as the compressed plate crumples and is uplifted t ...

form a complex geology that records a huge and varied span of Earth's history. Of particular note was the

Caledonian orogeny The Caledonian orogeny was a mountain-building era recorded in the northern parts of the British Isles, the Scandinavian Mountains, Svalbard, eastern Greenland and parts of north-central Europe. The Caledonian orogeny encompasses events that ...

during the

Ordovician The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. T ...

and early Silurian periods, when the

craton A craton (, , or ; from grc-gre, κράτος "strength") is an old and stable part of the continental lithosphere, which consists of Earth's two topmost layers, the crust and the uppermost mantle. Having often survived cycles of merging an ...

Baltica Baltica is a paleocontinent that formed in the Paleoproterozoic and now constitutes northwestern Eurasia, or Europe north of the Trans-European Suture Zone and west of the Ural Mountains. The thick core of Baltica, the East European Craton, ...

collided with the

terrane In geology, a terrane (; in full, a tectonostratigraphic terrane) is a crust (geology), crust fragment formed on a tectonic plate (or broken off from it) and Accretion (geology), accreted or "Suture (geology), sutured" to crust lying on another pla ...

Avalonia to form the mountains and hills in northern Britain and Ireland. Baltica formed roughly the northwestern half of Ireland and Scotland. Further collisions caused the

Variscan orogeny The Variscan or Hercynian orogeny was a geologic mountain-building event caused by Late Paleozoic continental collision between Euramerica (Laurussia) and Gondwana to form the supercontinent of Pangaea. Nomenclature The name ''Variscan'', comes f ...

in the Devonian and Carboniferous periods, forming the hills of Munster, southwest England, and southern Wales. Over the last 500 million years the land that forms the islands has drifted northwest from around 30°S, crossing the equator around 370 million years ago to reach its present northern latitude. The islands have been shaped by numerous glaciations during the

Quaternary Period The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ...

, the most recent being the Devensian. As this ended, the central Irish Sea was deglaciated and the English Channel flooded, with sea levels rising to current levels some 8,000 years ago, leaving the British Isles in their current form. There are about 136 permanently inhabited islands in the group, the largest two being Great Britain and Ireland. Great Britain is to the east and covers . Ireland is to the west and covers . The largest of the other islands are to be found in the

, Orkney and Shetland to the north,

Anglesey Anglesey (; cy, (Ynys) Môn ) is an island off the north-west coast of Wales. It forms a principal area known as the Isle of Anglesey, that includes Holy Island across the narrow Cymyran Strait and some islets and skerries. Anglesey island ...

and the Isle of Man between Great Britain and Ireland, and the

near the coast of France. The most densely populated island is

Portsea Island Portsea Island is a flat and low-lying natural island in area, just off the southern coast of Hampshire in England. Portsea Island contains the majority of the city of Portsmouth. Portsea Island has the third-largest population of all th ...

, which has an area of 9.5 sq mi (24.5 sq km) but has the third highest population behind Great Britain and Ireland. The islands are at relatively low altitudes, with central Ireland and southern Great Britain particularly low-lying: the lowest point in the islands is the

North Slob The North Slob is an area of mud-flats at the estuary of the River Slaney at Wexford Harbour, Ireland. The North Slob is an area of that was reclaimed in the mid-19th century by the building of a sea wall.County Wexford, Ireland, with an elevation of . The

Scottish Highlands The Highlands ( sco, the Hielands; gd, a’ Ghàidhealtachd , 'the place of the Gaels') is a historical region of Scotland. Culturally, the Highlands and the Lowlands diverged from the Late Middle Ages into the modern period, when Lowland S ...

in the northern part of Great Britain are mountainous, with

being the highest point on the islands at . Other mountainous areas include Wales and parts of Ireland, although only seven peaks in these areas reach above . Lakes on the islands are generally not large, although Lough Neagh in Northern Ireland is an exception, covering . The largest freshwater body in Great Britain (by area) is

Loch Lomond Loch Lomond (; gd, Loch Laomainn - 'Lake of the Elms'Richens, R. J. (1984) ''Elm'', Cambridge University Press.) is a freshwater Scottish loch which crosses the Highland Boundary Fault, often considered the boundary between the lowlands of C ...

at , and

Loch Ness Loch Ness (; gd, Loch Nis ) is a large freshwater loch in the Scottish Highlands extending for approximately southwest of Inverness. It takes its name from the River Ness, which flows from the northern end. Loch Ness is best known for claim ...

(by volume) whilst

Loch Morar Loch Morar (Scottish Gaelic: Loch Mòrair) is a freshwater loch in Lochaber, Highland, Scotland. It is the fifth-largest loch by surface area in Scotland, at , and the deepest freshwater body in the British Isles with a maximum depth of . The l ...

is the deepest freshwater body in the British Isles, with a maximum depth of .Gazetteer for Scotland
Morar, Loch. There are a number of major rivers within the British Isles. The longest is the Shannon in Ireland at . The

river Severn , name_etymology = , image = SevernFromCastleCB.JPG , image_size = 288 , image_caption = The river seen from Shrewsbury Castle , map = RiverSevernMap.jpg , map_size = 288 , map_c ...

at is the longest in Great Britain.

Climate

The climate of the British Isles is mild, moist and changeable with abundant rainfall and a lack of temperature extremes. It is defined as a temperate oceanic climate, or ''Cfb'' on the

Köppen climate classification The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notabl ...

system, a classification it shares with most of northwest Europe. The

North Atlantic Drift The North Atlantic Current (NAC), also known as North Atlantic Drift and North Atlantic Sea Movement, is a powerful warm western boundary current within the Atlantic Ocean that extends the Gulf Stream northeastward. The NAC originates from where ...

("Gulf Stream"), which flows from the Gulf of Mexico, brings with it significant moisture and raises temperatures above the global average for the islands' latitudes. Most Atlantic depressions pass to the north of the islands; combined with the general westerly circulation and interactions with the landmass, this imposes a general east–west variation in climate. There are four distinct climate patterns: south-east, with cold winters, warm and dry summers; south-west, having mild and very wet winters, warm and wet summers; north-west, generally wet with mild winters and cool summers; and north-east with cold winters, cool summers.

Flora and fauna

The islands enjoy a mild climate and varied soils, giving rise to a diverse pattern of vegetation. Animal and plant life is similar to that of the northwestern

European mainland Continental Europe or mainland Europe is the contiguous continent of Europe, excluding its surrounding islands. It can also be referred to ambiguously as the European continent, – which can conversely mean the whole of Europe – and, by ...

. There are however, fewer numbers of species, with Ireland having even less. All native

flora Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous (ecology), indigenous) native plant, native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' ...

and

fauna Fauna is all of the animal life present in a particular region or time. The corresponding term for plants is ''flora'', and for fungi, it is ''funga''. Flora, fauna, funga and other forms of life are collectively referred to as ''Biota (ecology ...

in Ireland is made up of species that migrated primarily from Great Britain. The only window when this could have occurred was prior to the melting of the

between the two islands 14,000 years ago approaching the end of the last ice age. As with most of Europe, prehistoric Britain and Ireland were covered with forest and swamp. Clearing began around 6000 BC and accelerated in medieval times. Despite this, Britain retained its primeval forests longer than most of Europe due to a small population and later development of trade and industry, and wood shortages were not a problem until the 17th century. By the 18th century, most of Britain's forests were consumed for shipbuilding or manufacturing charcoal and the nation was forced to import lumber from Scandinavia, North America, and the Baltic. Most forest land in Ireland is maintained by state forestation programmes. Almost all land outside urban areas is farmland. However, relatively large areas of forest remain in east and north Scotland and in southeast England. Oak, elm, ash and beech are amongst the most common trees in England. In Scotland, pine and birch are most common. Natural forests in Ireland are mainly oak, ash,

wych elm ''Ulmus glabra'' Hudson, the wych elm or Scots elm, has the widest range of the European elm species, from Ireland eastwards to the Urals, and from the Arctic Circle south to the mountains of the Peloponnese and Sicily, where the species reaches i ...

, birch and pine. Beech and

lime Lime commonly refers to: * Lime (fruit), a green citrus fruit * Lime (material), inorganic materials containing calcium, usually calcium oxide or calcium hydroxide * Lime (color), a color between yellow and green Lime may also refer to: Botany ...

, though not native to Ireland, are also common there. Farmland hosts a variety of semi-natural vegetation of grasses and flowering plants. Woods,

hedgerows A hedge or hedgerow is a line of closely spaced shrubs and sometimes trees, planted and trained to form a barrier or to mark the boundary of an area, such as between neighbouring properties. Hedges that are used to separate a road from adjoini ...

, mountain slopes and marshes host heather, wild grasses, gorse and

bracken Bracken (''Pteridium'') is a genus of large, coarse ferns in the family Dennstaedtiaceae. Ferns (Pteridophyta) are vascular plants that have alternating generations, large plants that produce spores and small plants that produce sex cells (eggs ...

. Many larger animals, such as wolves, bears and European elk are today extinct. However, some species such as red deer are protected. Other small mammals, such as rabbits,

foxes Foxes are small to medium-sized, omnivorous mammals belonging to several genera of the family Canidae. They have a flattened skull, upright, triangular ears, a pointed, slightly upturned snout, and a long bushy tail (or ''brush''). Twelve sp ...

badger Badgers are short-legged omnivores in the family Mustelidae (which also includes the otters, wolverines, martens, minks, polecats, weasels, and ferrets). Badgers are a polyphyletic rather than a natural taxonomic grouping, being united by ...

s, hares,

hedgehog A hedgehog is a spiny mammal of the subfamily Erinaceinae, in the eulipotyphlan family Erinaceidae. There are seventeen species of hedgehog in five genera found throughout parts of Europe, Asia, and Africa, and in New Zealand by introductio ...

s, and

stoat The stoat (''Mustela erminea''), also known as the Eurasian ermine, Beringian ermine and ermine, is a mustelid native to Eurasia and the northern portions of North America. Because of its wide circumpolar distribution, it is listed as Least Conc ...

s, are very common and the

European beaver The Eurasian beaver (''Castor fiber'') or European beaver is a beaver species that was once widespread in Eurasia, but was hunted to near-extinction for both its fur and castoreum. At the turn of the 20th century, only about 1,200 beavers survi ...

has been reintroduced in parts of Scotland.

Wild boar The wild boar (''Sus scrofa''), also known as the wild swine, common wild pig, Eurasian wild pig, or simply wild pig, is a suid native to much of Eurasia and North Africa, and has been introduced to the Americas and Oceania. The species is ...

have also been reintroduced to parts of southern England, following escapes from boar farms and illegal releases. Many rivers contain otters and

grey Grey (more common in British English) or gray (more common in American English) is an intermediate color between black and white. It is a neutral or achromatic color, meaning literally that it is "without color", because it can be composed o ...

and

common seal The harbor (or harbour) seal (''Phoca vitulina''), also known as the common seal, is a true seal found along temperate and Arctic marine coastlines of the Northern Hemisphere. The most widely distributed species of pinniped (walruses, eared se ...

s are numerous on coasts. There are about 250 bird species regularly recorded in Great Britain, and another 350 that occur with varying degrees of rarity. The most numerous species are wren, robin, house sparrow,

woodpigeon The common wood pigeon or common woodpigeon (''Columba palumbus''), also known as simply wood pigeon, wood-pigeon or woodpigeon, is a large species in the dove and pigeon family (Columbidae), native to the western Palearctic. It belongs to the g ...

chaffinch The common chaffinch or simply the chaffinch (''Fringilla coelebs'') is a common and widespread small passerine bird in the finch family. The male is brightly coloured with a blue-grey cap and rust-red underparts. The female is more subdued in ...

and blackbird. Farmland birds are declining in number, except for those kept for game such as

pheasant Pheasants ( ) are birds of several genera within the family Phasianidae in the order Galliformes. Although they can be found all over the world in introduced (and captive) populations, the pheasant genera native range is restricted to Eurasia ...

, red-legged partridge, and red grouse. Fish are abundant in the rivers and lakes, in particular salmon, trout, perch and

pike Pike, Pikes or The Pike may refer to: Fish * Blue pike or blue walleye, an extinct color morph of the yellow walleye ''Sander vitreus'' * Ctenoluciidae, the "pike characins", some species of which are commonly known as pikes * ''Esox'', genus of ...

. Sea fish include dogfish, cod, sole, pollock and bass, as well as mussels, crab and oysters along the coast. There are more than 21,000 species of insects. Few species of reptiles or amphibians are found in Great Britain or Ireland. Only three snakes are native to Great Britain: the adder, the

barred grass snake The barred grass snake (''Natrix helvetica'') is a non-venomous colubrid snake from Western Europe, living in and close to water. It was included within the grass snake species, ''Natrix natrix'', until August 2017, when genetic analysis led to i ...

and the

smooth snake The smooth snake (''Coronella austriaca'')Street D (1979). ''The Reptiles of Northern and Central Europe''. London: B.T. Batsford Ltd. 268 pp. . is a species of non-venomous snake in the family Colubridae. The species is found in northern and cen ...

; none are native to Ireland. In general, Great Britain has slightly more variation and native wildlife, with weasels,

polecat Polecat is a common name for several mustelid species in the order Carnivora and subfamilies Ictonychinae and Mustelinae. Polecats do not form a single taxonomic rank (i.e. clade). The name is applied to several species with broad similarities ...

s, wildcats, most

shrews Shrews (family Soricidae) are small mole-like mammals classified in the order Eulipotyphla. True shrews are not to be confused with treeshrews, otter shrews, elephant shrews, West Indies shrews, or marsupial shrews, which belong to different ...

moles Moles can refer to: * Moles de Xert, a mountain range in the Baix Maestrat comarca, Valencian Community, Spain * The Moles (Australian band) *The Moles, alter ego of Scottish band Simon Dupree and the Big Sound People *Abraham Moles, French engin ...

, water voles,

roe deer The roe deer (''Capreolus capreolus''), also known as the roe, western roe deer, or European roe, is a species of deer. The male of the species is sometimes referred to as a roebuck. The roe is a small deer, reddish and grey-brown, and well-adapt ...

and common toads also being absent from Ireland. This pattern is also true for birds and insects. Notable exceptions include the Kerry slug and certain species of woodlouse native to Ireland but not Great Britain. Domestic animals include the Connemara pony, Shetland pony, English Mastiff, Irish wolfhound and many varieties of cattle and sheep.

Demographics

British Isles population density 2011 NUTS3

England has a generally high population density, with almost 80% of the total population of the islands. Elsewhere in Great Britain and Ireland, high density of population is limited to areas around a few large cities. The largest urban area by far is the

Greater London Built-up Area The Greater London Built-up Area, or Greater London Urban Area, is a conurbation in south-east England that constitutes the continuous urban sprawl of London, and includes surrounding adjacent urban towns as defined by the Office for National Sta ...

with 9 million inhabitants. Other major population centres include the

Greater Manchester Built-up Area The Greater Manchester Built-up Area is an area of land defined by the Office for National Statistics (ONS), consisting of the large conurbation that encompasses the urban element of the city of Manchester and the metropolitan area that forms ...

(2.4 million),

West Midlands conurbation The West Midlands conurbation is the large conurbation that includes the cities of Birmingham and Wolverhampton and the towns of Sutton Coldfield, Dudley, Walsall, West Bromwich, Solihull, Stourbridge and Halesowen in the English West Midland ...

(2.4 million) and

West Yorkshire Urban Area The West Yorkshire Built-up Area, previously known as the West Yorkshire Urban Area is a term used by the Office for National Statistics (ONS) to refer to a conurbation in West Yorkshire, England, based on the cities of Leeds, Bradford and Wakefi ...

(1.6 million) in England,

Greater Glasgow Greater Glasgow is an urban settlement in Scotland consisting of all localities which are physically attached to the city of Glasgow, forming with it a single contiguous urban area (or conurbation). It does not relate to municipal government ...

(1.2 million) in Scotland and

Greater Dublin Area The Greater Dublin Area (GDA; Irish: ''Mórcheantar Bhaile Átha Cliath''), or simply Greater Dublin, is an informal term that is taken to include the city of Dublin and its hinterland, with varying definitions as to its extent. As of 2022, its ...

(1.9 million) in Ireland. The population of England rose rapidly during the 19th and 20th centuries, whereas the populations of Scotland and Wales showed little increase during the 20th century; the population of Scotland has remained unchanged since 1951. Ireland for most of its history had much the same population density as Great Britain (about one-third of the total population). However, since the Great Irish Famine, the population of Ireland has fallen to less than one-tenth of the population of the British Isles. The famine caused a century-long population decline, drastically reduced the Irish population and permanently altered the demographic make-up of the British Isles. On a global scale, this disaster led to the creation of an Irish diaspora that numbers fifteen times the current population of the island. The linguistic heritage of the British Isles is rich, with twelve languages from six groups across four branches of the

Indo-European The Indo-European languages are a language family native to the overwhelming majority of Europe, the Iranian plateau, and the northern Indian subcontinent. Some European languages of this family, English, French, Portuguese, Russian, Dutc ...

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

. The

of the

Goidelic The Goidelic or Gaelic languages ( ga, teangacha Gaelacha; gd, cànanan Goidhealach; gv, çhengaghyn Gaelgagh) form one of the two groups of Insular Celtic languages, the other being the Brittonic languages. Goidelic languages historically ...

sub-group (

Irish Irish may refer to: Common meanings * Someone or something of, from, or related to: ** Ireland, an island situated off the north-western coast of continental Europe ***Éire, Irish language name for the isle ** Northern Ireland, a constituent unit ...

, Manx and

Scottish Gaelic Scottish Gaelic ( gd, Gàidhlig ), also known as Scots Gaelic and Gaelic, is a Goidelic language (in the Celtic branch of the Indo-European language family) native to the Gaels of Scotland. As a Goidelic language, Scottish Gaelic, as well ...

) and the

Brittonic Brittonic or Brythonic may refer to: *Common Brittonic, or Brythonic, the Celtic language anciently spoken in Great Britain *Brittonic languages, a branch of the Celtic languages descended from Common Brittonic *Britons (Celtic people) The Br ...

sub-group ( Cornish, Welsh and Breton, spoken in north-western France) are the only remaining

Celtic languages The Celtic languages ( usually , but sometimes ) are a group of related languages descended from Proto-Celtic. They form a branch of the Indo-European language family. The term "Celtic" was first used to describe this language group by Edwar ...

—the last of their continental relations were extinct before the 7th century. The Norman languages of

Guernésiais Guernésiais, also known as ''Dgèrnésiais'', Guernsey French, and Guernsey Norman French, is the variety of the Norman language spoken in Guernsey. It is sometimes known on the island simply as "patois". As one of the langues d'oïl, it has it ...

, Jèrriais and

Sercquiais , also known as , Sarkese or Sark-French, is the Norman dialect of the Channel Island of Sark (Bailiwick of Guernsey). Sercquiais is a descendant of the 16th century Jèrriais used by the original colonists, 40 families mostly from Saint Ouen, ...

spoken in the Channel Islands are similar to French, a language also spoken there. A

cant Cant, CANT, canting, or canted may refer to: Language * Cant (language), a secret language * Beurla Reagaird, a language of the Scottish Highland Travellers * Scottish Cant, a language of the Scottish Lowland Travellers * Shelta or the Cant, a la ...

, called

Shelta Shelta (; Irish: ''Seiltis'') is a language spoken by Rilantu Mincéirí (Irish Travellers), particularly in Ireland and the United Kingdom.McArthur, T. (ed.) ''The Oxford Companion to the English Language'' (1992) Oxford University Press It i ...

, is spoken by

Irish Travellers Irish Travellers ( ga, an lucht siúil, meaning "the walking people"), also known as Pavees or Mincéirs (Shelta: Mincéirí), are a traditionally peripatetic indigenous ethno-cultural group in Ireland.''Questioning Gypsy identity: ethnic na ...

, often to conceal meaning from those outside the group. However, English, including Scots, is the dominant language, with few monoglots remaining in the other languages of the region. The

Norn language Norn is an extinct North Germanic language that was spoken in the Northern Isles ( Orkney and Shetland) off the north coast of mainland Scotland and in Caithness in the far north of the Scottish mainland. After Orkney and Shetland were pledged ...

of Orkney and Shetland became extinct around 1880.

Urban areas

History

At the end of the last ice age, what are now the British Isles were joined to the European mainland as a mass of land extending northwest from the modern-day northern coastline of France, Belgium and the Netherlands. Ice covered almost all of what is now Scotland, most of Ireland and Wales, and the hills of northern England. From 14,000 to 10,000 years ago, as the ice melted, sea levels rose to separate Ireland from Great Britain and also to create the Isle of Man. About two to four millennia later, Great Britain became separated from the mainland. Britain probably became repopulated with people before the ice age ended and certainly before it became separated from the mainland. It is likely that Ireland became settled by sea after it had already become an island. At the time of the Roman Empire, about two thousand years ago, various tribes, which spoke Celtic dialects of the Insular Celtic group, were inhabiting the islands. The Romans expanded their civilisation to control southern Great Britain but were impeded in advancing any further, building Hadrian's Wall to mark the northern frontier of their empire in 122 AD. At that time, Ireland was populated by a people known as Hiberni, the northern third or so of Great Britain by a people known as Picts and the southern two thirds by Britons. Alfred Jewel

Anglo-Saxons arrived as Roman power waned in the 5th century AD. Initially, their arrival seems to have been at the invitation of the Britons as mercenaries to repulse incursions by the Hiberni and Picts. In time, Anglo-Saxon demands on the British became so great that they came to culturally dominate the bulk of southern Great Britain, though recent genetic evidence suggests Britons still formed the bulk of the population. This dominance created what is now England and left culturally British enclaves only in the north of what is now England, in

Cornwall Cornwall (; kw, Kernow ) is a historic county and ceremonial county in South West England. It is recognised as one of the Celtic nations, and is the homeland of the Cornish people. Cornwall is bordered to the north and west by the Atlantic ...

and what is now known as Wales. Ireland had been unaffected by the Romans except, significantly, for being Christianised—traditionally by the Romano-Briton, Saint Patrick. As Europe, including Britain, descended into turmoil following the collapse of Roman civilisation, an era known as the Dark Ages, Ireland entered a

golden age The term Golden Age comes from Greek mythology, particularly the '' Works and Days'' of Hesiod, and is part of the description of temporal decline of the state of peoples through five Ages, Gold being the first and the one during which the G ...

and responded with missions (first to Great Britain and then to the continent), the founding of monasteries and universities. These were later joined by

Anglo-Saxon mission Anglo-Saxon missionaries were instrumental in the spread of Christianity in the Frankish Empire during the 8th century, continuing the work of Hiberno-Scottish missionaries which had been spreading Celtic Christianity across the Frankish Empire a ...

s of a similar nature. Viking invasions began in the 9th century, followed by more permanent settlements, particularly along the east coast of Ireland, the west coast of modern-day Scotland and the Isle of Man. Though the Vikings were eventually neutralised in Ireland, their influence remained in the cities of

Dublin Dublin (; , or ) is the capital and largest city of Ireland. On a bay at the mouth of the River Liffey, it is in the province of Leinster, bordered on the south by the Dublin Mountains, a part of the Wicklow Mountains range. At the 2016 c ...

, Cork,

Limerick Limerick ( ; ga, Luimneach ) is a western city in Ireland situated within County Limerick. It is in the province of Munster and is located in the Mid-West which comprises part of the Southern Region. With a population of 94,192 at the 2016 ...

Waterford "Waterford remains the untaken city" , mapsize = 220px , pushpin_map = Ireland#Europe , pushpin_map_caption = Location within Ireland##Location within Europe , pushpin_relief = 1 , coordinates ...

and

Wexford Wexford () is the county town of County Wexford, Ireland. Wexford lies on the south side of Wexford Harbour, the estuary of the River Slaney near the southeastern corner of the island of Ireland. The town is linked to Dublin by the M11/N11 ...

. England, however, was slowly conquered around the turn of the first millennium AD, and eventually became a feudal possession of

Denmark ) , song = ( en, "King Christian stood by the lofty mast") , song_type = National and royal anthem , image_map = EU-Denmark.svg , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of Denmark , establish ...

. The relations between the descendants of Vikings in England and counterparts in

Normandy Normandy (; french: link=no, Normandie ; nrf, Normaundie, Nouormandie ; from Old French , plural of ''Normant'', originally from the word for "northman" in several Scandinavian languages) is a geographical and cultural region in Northwestern ...

, in northern France, lay at the heart of a series of events that led to the

conquest of England in 1066. The remnants of the

Duchy of Normandy The Duchy of Normandy grew out of the 911 Treaty of Saint-Clair-sur-Epte between King Charles III of West Francia and the Viking leader Rollo. The duchy was named for its inhabitants, the Normans. From 1066 until 1204, as a result of the Norman c ...

, which conquered England, remain associated to the English Crown as the Channel Islands to this day. A century later, the marriage of the future

Henry II of England Henry II (5 March 1133 – 6 July 1189), also known as Henry Curtmantle (french: link=no, Court-manteau), Henry FitzEmpress, or Henry Plantagenet, was King of England from 1154 until his death in 1189, and as such, was the first Angevin king ...

Eleanor of Aquitaine Eleanor ( – 1 April 1204; french: Aliénor d'Aquitaine, ) was Queen of France from 1137 to 1152 as the wife of King Louis VII, Queen of England from 1154 to 1189 as the wife of King Henry II, and Duchess of Aquitaine in her own right from 1 ...

created the

Angevin Empire The Angevin Empire (; french: Empire Plantagenêt) describes the possessions of the House of Plantagenet during the 12th and 13th centuries, when they ruled over an area covering roughly half of France, all of England, and parts of Ireland and W ...

, partially under the

French Crown France was ruled by monarchs from the establishment of the Kingdom of West Francia in 843 until the end of the Second French Empire in 1870, with several interruptions. Classical French historiography usually regards Clovis I () as the firs ...

. At the invitation of

Diarmait Mac Murchada Diarmait Mac Murchada ( Modern Irish: Diarmaid Mac Murchadha), anglicised as Dermot MacMurrough, Dermod MacMurrough, or Dermot MacMorrogh (c. 1110 – c. 1 May 1171), was a King of Leinster in Ireland. In 1167, he was deposed by the High King ...

, a provincial king, and under the authority of Pope Adrian IV (the only Englishman to be elected pope), the Angevins invaded Ireland in 1169. Though initially intended to be kept as an independent kingdom, the failure of the Irish High King to ensure the terms of the Treaty of Windsor led Henry II, as King of England, to rule as effective monarch under the title of Lord of Ireland. This title was granted to his younger son, but when Henry's heir unexpectedly died, the title of King of England and Lord of Ireland became entwined in one person. James I of England by Daniel Mytens

By the

, Great Britain was separated into the Kingdoms of

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

and

Scotland Scotland (, ) is a Countries of the United Kingdom, country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a Anglo-Scottish border, border with England to the southeast ...

. Power in Ireland fluxed between Gaelic kingdoms, Hiberno-Norman lords and the English-dominated

. A similar situation existed in the

Principality of Wales The Principality of Wales ( cy, Tywysogaeth Cymru) was originally the territory of the native Welsh princes of the House of Aberffraw from 1216 to 1283, encompassing two-thirds of modern Wales during its height of 1267–1277. Following the co ...

, which was slowly being annexed into the Kingdom of England by a series of laws. During the course of the 15th century, the Crown of England would assert a claim to the Crown of France, thereby also releasing the King of England from being

vassal A vassal or liege subject is a person regarded as having a mutual obligation to a lord or monarch, in the context of the feudal system in medieval Europe. While the subordinate party is called a vassal, the dominant party is called a suzerain ...

of the King of France. In 1534, King Henry VIII, at first having been a strong defender of Roman Catholicism in the face of the Reformation, separated from the Roman Church after failing to secure a divorce from the Pope. His response was to place the King of England as "the only Supreme Head in Earth of the

Church of England The Church of England (C of E) is the established Christian church in England and the mother church of the international Anglican Communion. It traces its history to the Christian church recorded as existing in the Roman province of Britai ...

", thereby removing the authority of the Pope from the affairs of the English Church. Ireland, which had been held by the King of England as Lord of Ireland, but which strictly speaking had been a feudal possession of the Pope since the Norman invasion was declared a separate kingdom in personal union with England. Scotland meanwhile had remained an independent Kingdom. In 1603, that changed when the King of Scotland inherited the Crown of England, and consequently the Crown of Ireland also. The subsequent 17th century was one of political upheaval, religious division and war. English colonialism in Ireland of the 16th century was extended by large-scale Scottish and English colonies in

Ulster Ulster (; ga, Ulaidh or ''Cúige Uladh'' ; sco, label= Ulster Scots, Ulstèr or ''Ulster'') is one of the four traditional Irish provinces. It is made up of nine counties: six of these constitute Northern Ireland (a part of the United Kin ...

. Religious division heightened and the king in England came into conflict with parliament over his tolerance towards Catholicism. The resulting

English Civil War The English Civil War (1642–1651) was a series of civil wars and political machinations between Parliamentarians (" Roundheads") and Royalists led by Charles I ("Cavaliers"), mainly over the manner of England's governance and issues of re ...

War of the Three Kingdoms The Wars of the Three Kingdoms were a series of related conflicts fought between 1639 and 1653 in the kingdoms of England, Scotland and Ireland, then separate entities united in a personal union under Charles I. They include the 1639 to 1640 B ...

led to a

revolutionary republic A revolutionary republic is a form of government whose main tenets are popular sovereignty, rule of law, and representative democracy. It is based in part on the ideas of Whig and Enlightenment thinkers, and was favored by revolutionaries dur ...

in England. Ireland, largely Catholic was mainly loyal to the king, but by military conquest was subsumed into the new republic. Following defeat to the parliament's army, large scale land distributions from loyalist Irish nobility to English commoners in the service of the parliamentary army created a new Ascendancy class which obliterated the remnants of Old English (Hiberno-Norman) and Gaelic Irish nobility in Ireland. The new ruling class was Protestant and English, whilst the populace was largely Catholic and Irish. This theme would influence Irish politics for centuries to come. When the monarchy was restored in England, the king found it politically impossible to restore the lands of former landowners in Ireland. The " Glorious Revolution" of 1688 repeated similar themes: a Catholic king pushing for religious tolerance in opposition to a Protestant parliament in England. The king's army was defeated at the

Battle of the Boyne The Battle of the Boyne ( ga, Cath na Bóinne ) was a battle in 1690 between the forces of the deposed King James II of England and Ireland, VII of Scotland, and those of King William III who, with his wife Queen Mary II (his cousin and J ...

and at the militarily crucial

Battle of Aughrim The Battle of Aughrim ( ga, Cath Eachroma) was the decisive battle of the Williamite War in Ireland. It was fought between the largely Irish Jacobite army loyal to James II and the forces of William III on 12 July 1691 (old style, equivale ...

in Ireland. Resistance held out, eventually forcing the guarantee of religious tolerance in the

Treaty of Limerick }), signed on 3 October 1691, ended the 1689 to 1691 Williamite War in Ireland, a conflict related to the 1688 to 1697 Nine Years' War. It consisted of two separate agreements, one with military terms of surrender, signed by commanders of a French ...

. However, the terms were never honoured and a new monarchy was installed. The Kingdoms of England and Scotland were unified in 1707 creating the

Kingdom of Great Britain The Kingdom of Great Britain (officially Great Britain) was a Sovereign state, sovereign country in Western Europe from 1 May 1707 to the end of 31 December 1800. The state was created by the 1706 Treaty of Union and ratified by the Acts of ...

. Following an attempted republican revolution in Ireland in 1798, the Kingdoms of Ireland and Great Britain were unified in 1801, creating the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...

. The Isle of Man and the Channel Islands remaining outside of the United Kingdom but with their ultimate good governance being the responsibility of the British Crown (effectively the British government). Although the colonies of North America that would become the United States of America were lost by the start of the 19th century, the

British Empire The British Empire was composed of the dominions, colonies, protectorates, mandates, and other territories ruled or administered by the United Kingdom and its predecessor states. It began with the overseas possessions and trading posts e ...

expanded rapidly elsewhere. A century later it would cover one-third of the globe. Poverty in the United Kingdom remained desperate, however, and industrialisation in England led to terrible conditions for the working classes. Mass migrations following the

and Highland Clearances resulted in the distribution of the islands' population and culture throughout the world and a rapid de-population of Ireland in the second half of the 19th century. Most of Ireland seceded from the United Kingdom after the Irish War of Independence and the subsequent

(1919–1922), with the six counties that formed Northern Ireland remaining as an autonomous region of the UK.

Politics

There are two sovereign states in the British Isles:

and the

. Ireland, sometimes called the Republic of Ireland, governs five-sixths of the island of Ireland, with the remainder of the island forming Northern Ireland. Northern Ireland is a part of the United Kingdom of Great Britain and Northern Ireland, usually shortened to simply "the United Kingdom", which governs the remainder of the archipelago with the exception of the Isle of Man and the Channel Islands. The Isle of Man and the two Bailiwicks of the Channel Islands,

Jersey Jersey ( , ; nrf, Jèrri, label= Jèrriais ), officially the Bailiwick of Jersey (french: Bailliage de Jersey, links=no; Jèrriais: ), is an island country and self-governing Crown Dependency near the coast of north-west France. It is the l ...

and Guernsey, are known as the Crown Dependencies. They exercise constitutional rights of self-government and judicial independence; responsibility for international representation rests largely with the UK (in consultation with the respective governments); and responsibility for defence is reserved by the UK. The United Kingdom is made up of four constituent parts: England, Scotland and Wales, forming Great Britain, and Northern Ireland in the northeast of the island of Ireland. Of these, Scotland, Wales and Northern Ireland have

devolved Devolution is the statutory delegation of powers from the central government of a sovereign state to govern at a subnational level, such as a regional or local level. It is a form of administrative decentralization. Devolved territories ...

governments, meaning that each has its own parliament or assembly and is self-governing with respect to certain matters set down by law. For judicial purposes, Scotland, Northern Ireland and

England and Wales England and Wales () is one of the three legal jurisdictions of the United Kingdom. It covers the constituent countries England and Wales and was formed by the Laws in Wales Acts 1535 and 1542. The substantive law of the jurisdiction is Eng ...

(the latter being one entity) form separate legal jurisdictions, with there being no single law for the UK as a whole. Ireland, the United Kingdom and the three Crown dependencies are all

parliamentary democracies A parliamentary system, or parliamentarian democracy, is a system of democracy, democratic government, governance of a sovereign state, state (or subordinate entity) where the Executive (government), executive derives its democratic legitimacy ...

, with their own separate parliaments. All parts of the United Kingdom return

Members of Parliament A member of parliament (MP) is the representative in parliament of the people who live in their electoral district. In many countries with bicameral parliaments, this term refers only to members of the lower house since upper house members of ...

(MPs) to parliament in London. In addition to this, voters in Scotland, Wales and Northern Ireland return members to a devolved parliament in Edinburgh and in Cardiff and an assembly in Belfast. Governance in the norm is by majority rule; however, Northern Ireland uses a system of

power sharing Power sharing is a practice in conflict resolution where multiple groups distribute political, military, or economic power among themselves according to agreed rules. It can refer to any formal framework or informal pact that regulates the distri ...

whereby unionists and

nationalists Nationalism is an idea and movement that holds that the nation should be congruent with the state. As a movement, nationalism tends to promote the interests of a particular nation (as in a group of people), Smith, Anthony. ''Nationalism: The ...

share executive posts proportionately and where the assent of both groups is required for the Northern Ireland Assembly to make certain decisions. (In the context of Northern Ireland, unionists are those who want Northern Ireland to remain a part of the United Kingdom and nationalists are those who want Northern Ireland to join with the rest of Ireland.) The British monarch is the head of state of the United Kingdom, while in the Republic of Ireland the head of state is the

President of Ireland The president of Ireland ( ga, Uachtarán na hÉireann) is the head of state of Ireland and the supreme commander of the Irish Defence Forces. The president holds office for seven years, and can be elected for a maximum of two terms.Constitu ...

. Ireland is the only part of the isles that is a member state of the

European Union The European Union (EU) is a supranational political and economic union of member states that are located primarily in Europe. The union has a total area of and an estimated total population of about 447million. The EU has often been de ...

(EU). The UK was a member between 1 January 1973 and 31 January 2020, however the Isle of Man and the Channel Islands were not. Since the

partition of Ireland The partition of Ireland ( ga, críochdheighilt na hÉireann) was the process by which the Government of the United Kingdom of Great Britain and Ireland divided Ireland into two self-governing polities: Northern Ireland and Southern Ireland. ...

, an informal free-travel area has existed across the island of Ireland. This area required formal recognition in 1997 during the course of negotiations for the

Amsterdam Treaty The Treaty of Amsterdam, officially the Treaty of Amsterdam amending the Treaty on European Union, the Treaties establishing the European Communities and certain related acts, was signed on 2 October 1997, and entered into force on 1 May 1999; i ...

of the European Union, and (together with the Crown dependencies) is now known as the

Common Travel Area The Common Travel Area (CTA; ga, Comhlimistéar Taistil, ) is an open borders area comprising the United Kingdom, Ireland, Isle of Man, and the Channel Islands. The British Overseas Territories are not included. Based on agreements that are no ...

. As such, Ireland is not part of the Schengen Area, which allows passport-free travel between most EU member states, and is the only member state with an opt-out from the obligation to join the Schengen Zone. Reciprocal arrangements allow British and Irish citizens specific voting rights in the two states. In Ireland, British citizens can vote in General and local elections, but not in European Parliament elections, constitutional referendums or presidential elections (for which there is no comparable franchise in the United Kingdom). In the United Kingdom, Irish and Commonwealth citizens can vote in every election for which British citizens are eligible. In the Crown dependencies, any resident can vote in general elections, but in Jersey and the Isle of Man only British citizens can run for office. These pre-date European Union law, and in both jurisdictions go further than what was required by European Union law (EU citizens may only vote in local elections in both states and European elections in Ireland). In 2008, a

UK Ministry of Justice , type = Ministerial Department , logo = Ministry of Justice logo.svg , logo_width = 140px , logo_caption = , picture = HomeOffice QueenAnnesGate.jpg , picture_width = 140px , picture_caption = Head ...

report investigating how to strengthen the British sense of citizenship proposed to end this arrangement, arguing that "the right to vote is one of the hallmarks of the political status of citizens; it is not a means of expressing closeness between countries". In addition, some civil bodies are organised throughout the islands as a whole—for example, the Samaritans, which is deliberately organised without regard to national boundaries on the basis that a service which is not political or religious should not recognise sectarian or political divisions. The Royal National Lifeboat Institution (RNLI), a charity that operates a lifeboat service, is also organised throughout the islands as a whole, covering the waters of the United Kingdom, Ireland, the Isle of Man, and the Channel Islands. The

Northern Ireland peace process The Northern Ireland peace process includes the events leading up to the 1994 Provisional Irish Republican Army (IRA) ceasefire, the end of most of the violence of the Troubles, the Good Friday Agreement of 1998, and subsequent political developm ...

has led to a number of unusual arrangements between the Republic of Ireland, Northern Ireland and the United Kingdom. For example, citizens of Northern Ireland are entitled to the choice of Irish or British citizenship or both, and the Governments of Ireland and the United Kingdom consult on matters not devolved to the

Northern Ireland Executive The Northern Ireland Executive is the devolved government of Northern Ireland, an administrative branch of the legislature – the Northern Ireland Assembly. It is answerable to the assembly and was initially established according to the ...

. The Northern Ireland Executive and the Government of Ireland also meet as the North/South Ministerial Council to develop policies common across the island of Ireland. These arrangements were made following the 1998

Good Friday Agreement The Good Friday Agreement (GFA), or Belfast Agreement ( ga, Comhaontú Aoine an Chéasta or ; Ulster-Scots: or ), is a pair of agreements signed on 10 April 1998 that ended most of the violence of The Troubles, a political conflict in No ...

British–Irish Council

Another body established under the Good Friday Agreement, the British–Irish Council, is made up of all of the states and territories of the British Isles. The

British–Irish Parliamentary Assembly The British–Irish Parliamentary Assembly (BIPA, ga, Tionól Pharlaiminteach na Breataine agus na hÉireann) is a deliberative body consisting of members elected to those national legislative bodies found within Ireland and the United Kingdom ...

( ga, Tionól Pharlaiminteach na Breataine agus na hÉireann) predates the British–Irish Council and was established in 1990. Originally it comprised 25 members of the Oireachtas, the Irish parliament, and 25 members of the

parliament of the United Kingdom The Parliament of the United Kingdom is the supreme legislative body of the United Kingdom, the Crown Dependencies and the British Overseas Territories. It meets at the Palace of Westminster, London. It alone possesses legislative suprema ...

, with the purpose of building mutual understanding between members of both legislatures. Since then the role and scope of the body has been expanded to include representatives from the Scottish Parliament, the Senedd (Welsh Parliament), the Northern Ireland Assembly, the States of Jersey, the States of Guernsey and the High Court of Tynwald (Isle of Man). The Council does not have executive powers but meets biannually to discuss issues of mutual importance. Similarly, the Parliamentary Assembly has no legislative powers but investigates and collects witness evidence from the public on matters of mutual concern to its members. Reports on its findings are presented to the Governments of Ireland and the United Kingdom. During the February 2008 meeting of the British–Irish Council, it was agreed to set up a standing secretariat that would serve as a permanent 'civil service' for the Council. Leading on from developments in the British–Irish Council, the chair of the British–Irish Inter-Parliamentary Assembly,

Niall Blaney Niall Blaney (born 29 January 1974) is an Irish politician who has been a Senator for the Agricultural Panel since April 2020. He was a member of Independent Fianna Fáil until he joined Fianna Fáil in 2006, he served as a Teachta Dála (TD) ...

, has suggested that the body should shadow the British–Irish Council's work.

Culture

The United Kingdom and Ireland have separate media, although British television, newspapers and magazines are widely available in Ireland, giving people in Ireland a high level of familiarity with the culture of the United Kingdom. Irish newspapers are also available in the UK, and Irish state and private television are widely available in Northern Ireland. Certain reality TV shows have embraced the whole of the islands, for example ''

The X Factor ''The X Factor'' is a television music competition franchise created by British producer Simon Cowell and his company Syco Entertainment. It originated in the United Kingdom, where it was devised as a replacement for '' Pop Idol'' (2001–2003 ...

'', seasons 3, 4 and 7 of which featured auditions in Dublin and were open to Irish voters, whilst the show previously known as ''Britain's Next Top Model'' became '' Britain and Ireland's Next Top Model'' in 2011. A few cultural events are organised for the island group as a whole. For example, the

Costa Book Awards The Costa Book Awards were a set of annual literary awards recognising English-language books by writers based in UK and Ireland. Originally named the Whitbread Book Awards from 1971 to 2005 after its first sponsor, the Whitbread company, the ...

are awarded to authors resident in the UK or Ireland. The

Mercury Music Prize The Mercury Prize, formerly called the Mercury Music Prize, is an annual music prize awarded for the best album released in the United Kingdom by a British or Irish act. It was created by Jon Webster and Robert Chandler in association with the B ...

is handed out every year to the best album from a British or Irish musician or group. Many globally popular sports had their modern rules codified in the British Isles, including golf,

association football Association football, more commonly known as football or soccer, is a team sport played between two teams of 11 players who primarily use their feet to propel the ball around a rectangular field called a pitch. The objective of the game is ...

cricket Cricket is a bat-and-ball game played between two teams of eleven players on a field at the centre of which is a pitch with a wicket at each end, each comprising two bails balanced on three stumps. The batting side scores runs by str ...

rugby Rugby may refer to: Sport * Rugby football in many forms: ** Rugby league: 13 players per side *** Masters Rugby League *** Mod league *** Rugby league nines *** Rugby league sevens *** Touch (sport) *** Wheelchair rugby league ** Rugby union: 1 ...

, snooker and darts, as well as many minor sports such as

croquet Croquet ( or ; french: croquet) is a sport that involves hitting wooden or plastic balls with a mallet through hoops (often called "wickets" in the United States) embedded in a grass playing court. Its international governing body is the W ...

, bowls,

pitch and putt Pitch and putt is an amateur sport very similar to, and derived from, golf, where the hole length is typically up to and just 2–3 clubs are typically used. The game was organised and developed in Ireland during the early 20th century, befo ...

water polo Water polo is a competitive sport, competitive team sport played in water between two teams of seven players each. The game consists of four quarters in which the teams attempt to score goals by throwing the water polo ball, ball into the oppo ...

and handball. A number of sports are popular throughout the British Isles, the most prominent of which is association football. While this is organised separately in different national associations, leagues and national teams, even within the UK, it is a common passion in all parts of the islands.

Rugby union Rugby union, commonly known simply as rugby, is a close-contact team sport that originated at Rugby School in the first half of the 19th century. One of the two codes of rugby football, it is based on running with the ball in hand. In it ...

is also widely enjoyed across the islands with four national teams from

and

Wales Wales ( cy, Cymru ) is a country that is part of the United Kingdom. It is bordered by England to the east, the Irish Sea to the north and west, the Celtic Sea to the south west and the Bristol Channel to the south. It had a population in ...

. The

British and Irish Lions The British & Irish Lions is a rugby union team selected from players eligible for the national teams of England, Ireland, Scotland, and Wales. The Lions are a test side and most often select players who have already played for their national ...

is a team chosen from each national team and undertakes tours of the Southern Hemisphere rugby-playing nations every four years. Ireland plays as a united team, represented by players from both Northern Ireland and the Republic. These national rugby teams play each other each year for the

Triple Crown Triple Crown may refer to: Sports Horse racing * Triple Crown of Thoroughbred Racing * Triple Crown of Thoroughbred Racing (United States) ** Triple Crown Trophy ** Triple Crown Productions * Canadian Triple Crown of Thoroughbred Racing * Tri ...

as part of the Six Nations Championship. Also, since 2001, the professional club teams of Ireland, Scotland, Wales, Italy and South Africa compete against each other in the

United Rugby Championship The United Rugby Championship (URC) is an annual rugby union competition involving professional teams from Ireland, Italy, Scotland, South Africa, and Wales. The current name was adopted in 2021 when the league expanded to include four South Afr ...

. The Ryder Cup in golf was originally played between a United States team and a team representing Great Britain and Ireland. From 1979 onwards this was expanded to include the whole of Europe.

Transport

London Heathrow Airport Heathrow Airport (), called ''London Airport'' until 1966 and now known as London Heathrow , is a major international airport in London, England. It is the largest of the six international airports in the London airport system (the others be ...

is Europe's busiest airport in terms of passenger traffic, and the Dublin-London route is the busiest air route in Europe collectively, the busiest route out of Heathrow and the second-busiest international air route in the world. The

English Channel The English Channel, "The Sleeve"; nrf, la Maunche, "The Sleeve" (Cotentinais) or ( Jèrriais), (Guernésiais), "The Channel"; br, Mor Breizh, "Sea of Brittany"; cy, Môr Udd, "Lord's Sea"; kw, Mor Bretannek, "British Sea"; nl, Het Kana ...

and the southern

North Sea The North Sea lies between Great Britain, Norway, Denmark, Germany, the Netherlands and Belgium. An epeiric sea, epeiric sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the ...

are the busiest seaways in the world. The Channel Tunnel, opened in 1994, links Great Britain to France and is the second-longest rail tunnel in the world. The idea of building a tunnel under the Irish Sea has been raised since 1895, when it was first investigated. Several potential Irish Sea tunnel projects have been proposed, most recently the ''Tusker Tunnel'' between the ports of Rosslare and

Fishguard Fishguard ( cy, Abergwaun, meaning "Mouth of the River Gwaun") is a coastal town in Pembrokeshire, Wales, with a population of 3,419 in 2011; the community of Fishguard and Goodwick had a population of 5,407. Modern Fishguard consists of two p ...

proposed by The Institute of Engineers of Ireland in 2004. A rail tunnel was proposed in 1997 on a different route, between

and Holyhead, by British engineering firm Symonds. Either tunnel, at , would be by far the longest in the world, and would cost an estimated £15 billion or €20 billion. A proposal in 2007,BBC News
From Twinbrook to the Trevi Fountain
21 August 2007. estimated the cost of building a bridge from

County Antrim County Antrim (named after the town of Antrim, ) is one of six counties of Northern Ireland and one of the thirty-two counties of Ireland. Adjoined to the north-east shore of Lough Neagh, the county covers an area of and has a population o ...

in Northern Ireland to

Galloway Galloway ( ; sco, Gallowa; la, Gallovidia) is a region in southwestern Scotland comprising the historic counties of Wigtownshire and Kirkcudbrightshire. It is administered as part of the council area of Dumfries and Galloway. A native or ...

in Scotland at £3.5bn (€5bn).

Notes

References

External links

* A
interactive geological map
of the British Isles. {{Authority control Geography of Northwestern Europe Northwestern Europe Regions of Europe Archipelagoes of Europe

Etymology

Geography

Climate

Flora and fauna

Demographics

Urban areas

History

Politics

British–Irish Council

Culture

Transport

See also

Notes

References

Further reading

External links