Teesside () is an
urban area
An urban area is a human settlement with a high population density and an infrastructure of built environment. Urban areas originate through urbanization, and researchers categorize them as cities, towns, conurbations or suburbs. In urbani ...
around the
River Tees
The River Tees (), in England, rises on the eastern slope of Cross Fell in the North Pennines and flows eastwards for to reach the North Sea in the North East of England. The modern-day history of the river has been tied with the industries ...
in
North East England
North East England, commonly referred to simply as the North East within England, is one of nine official regions of England. It consists of County DurhamNorthumberland, , Northumberland, Tyne and Wear and part of northern North Yorkshire. ...
. Straddling the border between
County Durham
County Durham, officially simply Durham, is a ceremonial county in North East England.UK General Acts 1997 c. 23Lieutenancies Act 1997 Schedule 1(3). From legislation.gov.uk, retrieved 6 April 2022. The county borders Northumberland and Tyne an ...
and
North Yorkshire
North Yorkshire is a Ceremonial counties of England, ceremonial county in Northern England.The Unitary authorities of England, unitary authority areas of City of York, York and North Yorkshire (district), North Yorkshire are in Yorkshire and t ...
, it spans the boroughs of
Middlesbrough
Middlesbrough ( ), colloquially known as Boro, is a port town in the Borough of Middlesbrough, North Yorkshire, England. Lying to the south of the River Tees, Middlesbrough forms part of the Teesside Built up area, built-up area and the Tees Va ...
,
Stockton-on-Tees
Stockton-on-Tees is a market town in County Durham, England, with a population of 84,815 at the 2021 UK census. It gives its name to and is the largest settlement in the wider Borough of Stockton-on-Tees. It is part of Teesside and the Tees Val ...
and
Redcar and Cleveland. In 2011, it was the eighteenth largest urban area in the United Kingdom. It forms part of the wider
Tees Valley
Tees Valley is a combined authority area in North East England, around the lower River Tees. The area is not a geographical valley. The combined authority covers five council areas: Darlington, Hartlepool, Middlesbrough, Redcar and Cleveland ...
area, which also includes the boroughs of
Darlington
Darlington is a market town in the Borough of Darlington, County Durham, England. It lies on the River Skerne, west of Middlesbrough and south of Durham. Darlington had a population of 107,800 at the 2021 Census, making it a "large town" ...
and
Hartlepool
Hartlepool ( ) is a seaside resort, seaside and port town in County Durham, England. It is governed by a unitary authority borough Borough of Hartlepool, named after the town. The borough is part of the devolved Tees Valley area with an estimat ...
.
Towns on Teesside include
Middlesbrough
Middlesbrough ( ), colloquially known as Boro, is a port town in the Borough of Middlesbrough, North Yorkshire, England. Lying to the south of the River Tees, Middlesbrough forms part of the Teesside Built up area, built-up area and the Tees Va ...
,
Stockton-on-Tees
Stockton-on-Tees is a market town in County Durham, England, with a population of 84,815 at the 2021 UK census. It gives its name to and is the largest settlement in the wider Borough of Stockton-on-Tees. It is part of Teesside and the Tees Val ...
,
Billingham
Billingham is a List of towns in England, town and Civil parishes in England, civil parish in County Durham, England. The town is on the north side of the River Tees and is governed as part of the Borough of Stockton-on-Tees unitary authority ...
,
Redcar
Redcar is a seaside town on the Yorkshire Coast in the Redcar and Cleveland unitary authority. It is in the ceremonial county of North Yorkshire, England, and is located east of Middlesbrough.
The Teesside built-up area's Redcar subdiv ...
,
Thornaby-on-Tees
Thornaby-on-Tees, commonly referred to as Thornaby, is a town and Civil parishes in England, civil parish in North Yorkshire, England, north of York and south-east of Middlesbrough. On the south bank of the River Tees, Thornaby falls within th ...
, and
Ingleby Barwick
Ingleby Barwick is a town and civil parishes in England, civil parish in the Borough of Stockton-on-Tees, North Yorkshire, England. It is south of the River Tees and north-east of the River Leven, North Yorkshire, River Leven.
Large scale devel ...
. The local economy was once dominated by
heavy manufacturing until
deindustrialisation
Deindustrialization is a process of social and economic change caused by the removal or reduction of industrial capacity or activity in a country or region, especially of heavy industry or manufacturing industry.
There are different interpr ...
in the latter half of the
20th century
The 20th century began on 1 January 1901 (MCMI), and ended on 31 December 2000 (MM). It was the 10th and last century in the 2nd millennium and was marked by new models of scientific understanding, unprecedented scopes of warfare, new modes of ...
.
History
1968–1974: County borough

Before the county of
Cleveland
Cleveland is a city in the U.S. state of Ohio and the county seat of Cuyahoga County. Located along the southern shore of Lake Erie, it is situated across the Canada–U.S. maritime border and approximately west of the Ohio-Pennsylvania st ...
was created, the area (including Stockton-on-Tees) existed as a part of the North Riding of Yorkshire, due to most land being south of the Tees. Teesside was created due to Stockton-on-Tees being linked heavily with
Thornaby
Thornaby-on-Tees, commonly referred to as Thornaby, is a town and Civil parishes in England, civil parish in North Yorkshire, England, north of York and south-east of Middlesbrough. On the south bank of the River Tees, Thornaby falls within th ...
(which had amalgamated with South Stockton/Mandale to form the Borough of Thornaby), Middlesbrough and Redcar by industry.
Compared to the modern Teesside conurbation, the area was smaller, then excluding towns such as Hartlepool,
Ingleby Barwick
Ingleby Barwick is a town and civil parishes in England, civil parish in the Borough of Stockton-on-Tees, North Yorkshire, England. It is south of the River Tees and north-east of the River Leven, North Yorkshire, River Leven.
Large scale devel ...
and
Yarm
Yarm-on-Tees, or simply Yarm, is a market town in North Yorkshire, England. It lies on a meander of the River Tees, extending south-east to the River Leven, North Yorkshire, River Leven and south to the village of Kirklevington. A civil parish i ...
, the latter two being in the
Stokesley Rural District until Cleveland was created. The Teesside name is still used as a synonym for Tees Valley with most signage and local business retaining the name.
1969: Redcliffe-Maud Report
The
Royal Commission
A royal commission is a major ad-hoc formal public inquiry into a defined issue in some monarchies. They have been held in the United Kingdom, Australia, Canada, New Zealand, Norway, Malaysia, Mauritius and Saudi Arabia. In republics an equi ...
, proposed in the
Redcliffe-Maud Report, a large unitary authority called Teesside. It would have covered what came to be the
County of Cleveland in addition to
Whitby
Whitby is a seaside town, port and civil parish in North Yorkshire, England. It is on the Yorkshire Coast at the mouth of the River Esk, North Yorkshire, River Esk and has a maritime, mineral and tourist economy.
From the Middle Ages, Whitby ...
and
Stokesley
Stokesley is a market town and civil parish in North Yorkshire, England. It lies within the Historic counties of England, historic county boundaries of the North Riding of Yorkshire, on the River Leven, North Yorkshire, River Leven. An Wards and ...
.
1974–1996: Non-metropolitan county
The County of Cleveland was created in 1974. It was smaller and included a county and four borough councils than the Redcliffe-Maud report's single council.
The name was also changed from Teesside to Cleveland as the report's area South of the River Tees corresponded to the Langbaurgh Wapentake, which had the alternative name of
Cleveland
Cleveland is a city in the U.S. state of Ohio and the county seat of Cuyahoga County. Located along the southern shore of Lake Erie, it is situated across the Canada–U.S. maritime border and approximately west of the Ohio-Pennsylvania st ...
.
Cleveland Police was retained, along with other institutions covering the four boroughs. Each borough became a unitary authority with the county council abolished in 1996.
From 2016: Mayoralty
In 1998 the neighbouring
Borough of Darlington gained unitary authority status.
Tees Valley
Tees Valley is a combined authority area in North East England, around the lower River Tees. The area is not a geographical valley. The combined authority covers five council areas: Darlington, Hartlepool, Middlesbrough, Redcar and Cleveland ...
was initially a statistical sub-region of North East England across the four former Cleveland boroughs and the Borough of Darlington.
This name and area carried over to an
enterprise partnership formed in 2011 and a
combined authority
A combined authority (CA) is a type of local government institution introduced in England outside Greater London by the Local Democracy, Economic Development and Construction Act 2009. CAs are created voluntarily and allow a group of local au ...
created in 2016, twenty years after the abolition of the Cleveland county. The authority is headed by a mayor, presently William Boyle.
Demography

The Teesside Built-up Area (BUA), previously the Teesside Urban Area in 2001, identified by the
ONS for statistical purposes had a population of around 376,633 according to the 2011 census
which is up 3% on the 2001 figure of 365,323, and had the following subdivisions:
*North Tees
**
Stockton-on-Tees
Stockton-on-Tees is a market town in County Durham, England, with a population of 84,815 at the 2021 UK census. It gives its name to and is the largest settlement in the wider Borough of Stockton-on-Tees. It is part of Teesside and the Tees Val ...
(82,792)
**
Billingham
Billingham is a List of towns in England, town and Civil parishes in England, civil parish in County Durham, England. The town is on the north side of the River Tees and is governed as part of the Borough of Stockton-on-Tees unitary authority ...
(35,392)
**
Wolviston
Wolviston is a village and civil parishes in England, civil parish within the borough of Stockton-on-Tees (borough), Stockton-on-Tees and the ceremonial county of County Durham, England. The population of the civil parish as of the 2011 census w ...
(877)
**
High Clarence (773)
*South Tees
**
Middlesbrough
Middlesbrough ( ), colloquially known as Boro, is a port town in the Borough of Middlesbrough, North Yorkshire, England. Lying to the south of the River Tees, Middlesbrough forms part of the Teesside Built up area, built-up area and the Tees Va ...
(174,700)
**
Redcar
Redcar is a seaside town on the Yorkshire Coast in the Redcar and Cleveland unitary authority. It is in the ceremonial county of North Yorkshire, England, and is located east of Middlesbrough.
The Teesside built-up area's Redcar subdiv ...
(37,073)
**
Thornaby-on-Tees
Thornaby-on-Tees, commonly referred to as Thornaby, is a town and Civil parishes in England, civil parish in North Yorkshire, England, north of York and south-east of Middlesbrough. On the south bank of the River Tees, Thornaby falls within th ...
(24,741)
**
Ingleby Barwick
Ingleby Barwick is a town and civil parishes in England, civil parish in the Borough of Stockton-on-Tees, North Yorkshire, England. It is south of the River Tees and north-east of the River Leven, North Yorkshire, River Leven.
Large scale devel ...
(20,378)
Eaglescliffe (north) and
Yarm
Yarm-on-Tees, or simply Yarm, is a market town in North Yorkshire, England. It lies on a meander of the River Tees, extending south-east to the River Leven, North Yorkshire, River Leven and south to the village of Kirklevington. A civil parish i ...
(south) are counted as a separate Yarm urban area, separated by a narrow gap, which had a population of 19,184
according to the 2011 census; up 5% from the 2001 figure of 18,335. Infilling development may join the two urban areas together.
Marske-by-the-Sea is another separate Urban Area nearly contiguous with
Redcar
Redcar is a seaside town on the Yorkshire Coast in the Redcar and Cleveland unitary authority. It is in the ceremonial county of North Yorkshire, England, and is located east of Middlesbrough.
The Teesside built-up area's Redcar subdiv ...
with a population of 8,282
down 7% from the 2001 figure of 8,921.
The nearby
Hartlepool
Hartlepool ( ) is a seaside resort, seaside and port town in County Durham, England. It is governed by a unitary authority borough Borough of Hartlepool, named after the town. The borough is part of the devolved Tees Valley area with an estimat ...
built-up area is sometimes grouped with the area, due to it previously being in Cleveland county. The Hartlepool area has an urban population of 88,855
an increase of 3% from the 2001 figure of 86,085 and this can be referred to as the Teesside & Hartlepool Urban Area. If this definition is taken into consideration, with the addition of the Eaglescliffe area and Marske, Teesside would have a population of approximately 492,954 people.
Processing
Teesside industry is dominated by the commodity and integrated chemical producers in the
North East of England Process Industry Cluster (NEPIC). These companies are based on three large chemical sites at
Wilton,
Billingham
Billingham is a List of towns in England, town and Civil parishes in England, civil parish in County Durham, England. The town is on the north side of the River Tees and is governed as part of the Borough of Stockton-on-Tees unitary authority ...
and
Seal Sands. These companies make products such as
petrochemical
Petrochemicals (sometimes abbreviated as petchems) are the chemical products obtained from petroleum by refining. Some chemical compounds made from petroleum are also obtained from other fossil fuels, such as coal or natural gas, or renewable s ...
s,
commodity chemicals
Commodity chemicals (or bulk commodities or bulk chemicals) are a group of chemicals that are made on a very large scale to satisfy global markets. The average prices of commodity chemicals are regularly published in the chemical trade magazines an ...
,
fertilizer
A fertilizer or fertiliser is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from liming materials or other non-nutrient soil amendments. Man ...
s and
polymer
A polymer () is a chemical substance, substance or material that consists of very large molecules, or macromolecules, that are constituted by many repeat unit, repeating subunits derived from one or more species of monomers. Due to their br ...
s.
Salt

Salt extraction for human consumption and had taken place at
Seal Sands since Roman times through the use of panning. This continued throughout the 20th century and left caverns which are now used as liquid/gas storage facilities for the process industry.
In 1859,
rock salt
Halite ( ), commonly known as rock salt, is a type of salt, the mineral (natural) form of sodium chloride ( Na Cl). Halite forms isometric crystals. The mineral is typically colorless or white, but may also be light blue, dark blue, purple, pi ...
deposits were discovered in Middlesbrough by
Henry Bolckow
Henry William Ferdinand Bolckow, originally Heinrich Wilhelm Ferdinand Bölckow, (8 December 1806 – 18 June 1878) was a Victorian industrialist and Member of Parliament, acknowledged as being one of the founders of modern Middlesbrough.
In a ...
and
Vaughan
Vaughan ( ) (2022 population 344,412) is a city in Ontario, Canada. It is located in the Regional Municipality of York, just north of Toronto. Vaughan was the fastest-growing municipality in Canada between 1996 and 2006 with its population increa ...
while boring for water. This led to heavy chemical industry moving to the area.
Salt works were established at Haverton Hill in 1882 by the Bell Brothers. It was the first firm to begin large scale salt production in the area, this required some workers in from Cheshire. Salt-making interests of the Bell Brothers were bought by
Brunner Mond & Co of Cheshire in 1890. Brunner Mond became a giant of the area's chemical-making in the late 19th and early 20th centuries.
During the 20th century, salt extraction on the Tees's north bank (by aqueous hydraulic means) resulted in a number of underground salt cavities that are impervious to gas and liquids. Consequently, these cavities are now used to store both industrial gases and liquids by companies which are members of the
Northeast of England Process Industry Cluster (NEPIC).
Today Venator Materials is based close to Greatham, operating one of the world's largest
chemical plant
A chemical plant is an industrial process plant that manufactures (or otherwise processes) chemicals, usually on a large scale. The general objective of a chemical plant is to create new material wealth via the chemical or biological transfor ...
s for
titanium dioxide
Titanium dioxide, also known as titanium(IV) oxide or titania , is the inorganic compound derived from titanium with the chemical formula . When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or Colour Index Internationa ...
manufacturing. It is a brilliant white
pigment
A pigment is a powder used to add or alter color or change visual appearance. Pigments are completely or nearly solubility, insoluble and reactivity (chemistry), chemically unreactive in water or another medium; in contrast, dyes are colored sub ...
used in paints, Polo mints, cosmetics, UV sunscreens, plastics, golf balls, the white part of a traffic cone and sports field line markings.
Alkali
In 1860 William James established an alkali company at Cargo Fleet and in 1869
Samuel Sadler also set up a factory nearby. Sadler's works produced synthetic aniline and alzarin dyestuffs and distilled tar. The introduction of the
Solvay Process
The Solvay process or ammonia–soda process is the major industrial process for the production of sodium carbonate (soda ash, Na2CO3). The ammonia–soda process was developed into its modern form by the Belgian chemist Ernest Solvay during the ...
to make alkali in 1872 made nearby Tyneside alkali industry uneconomical but helped Teesside industry which was invigorated by the discovery of further salt deposits at Port Clarence near Seal Sands by Bell Brothers in 1874.
Ammonia

The
chemical industry
The chemical industry comprises the companies and other organizations that develop and produce industrial, specialty and other chemicals. Central to the modern world economy, the chemical industry converts raw materials ( oil, natural gas, air, ...
was established at
Billingham
Billingham is a List of towns in England, town and Civil parishes in England, civil parish in County Durham, England. The town is on the north side of the River Tees and is governed as part of the Borough of Stockton-on-Tees unitary authority ...
in 1918 by the Government for the production of synthetic
ammonia
Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the chemical formula, formula . A Binary compounds of hydrogen, stable binary hydride and the simplest pnictogen hydride, ammonia is a colourless gas with a distinctive pu ...
, with its intended use being the manufacture of munitions during the
Great War
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
. The 700 acre Grange Farm at Billingham was chosen for the site. However, by the time the plant opened the war was over and its manufacturing techniques outdated. It was taken over by Brunner Mond in 1920 and manufactured synthetic ammonia and fertilisers. Brunner Mond merged with other large scale chemical manufacturers in 1926 to form
Imperial Chemical Industries
Imperial Chemical Industries (ICI) was a British Chemical industry, chemical company. It was, for much of its history, the largest manufacturer in Britain. Its headquarters were at Millbank in London. ICI was listed on the London Stock Exchange ...
(ICI).
Sulphuric acid and fertilisers
Teesside's first chemical works was when Robert Wilson produced sulphuric acid and fertilisers at Urlay Nook near Egglescliffe in 1833.
In 1928, anhydrite was mined from below Billingham for making
sulphuric acid, a component for
detergent
A detergent is a surfactant or a mixture of surfactants with Cleanliness, cleansing properties when in Concentration, dilute Solution (chemistry), solutions. There are a large variety of detergents. A common family is the alkylbenzene sulfonate ...
and
fertilizer
A fertilizer or fertiliser is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from liming materials or other non-nutrient soil amendments. Man ...
manufacturing.
Ammonia and fertiliser works are operated by CF Fertilisers.
Plastics and nylon
Billingham's plastic manufacturing began in 1934. This was one of the earliest sites in the world where large-scale manufacture of these materials took place. Another
chemical plant
A chemical plant is an industrial process plant that manufactures (or otherwise processes) chemicals, usually on a large scale. The general objective of a chemical plant is to create new material wealth via the chemical or biological transfor ...
was established the following year to make oil and petrol from
creosote
Creosote is a category of carbonaceous chemicals formed by the distillation of various tars and pyrolysis of plant-derived material, such as wood, or fossil fuel. They are typically used as preservatives or antiseptics.
Some creosote types w ...
and coal by a process called
hydrogenation
Hydrogenation is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as nickel, palladium or platinum. The process is commonly employed to redox, reduce or Saturated ...
. In 1946 another large chemical works opened on Teesside at
Wilton, on the south side of the
River Tees
The River Tees (), in England, rises on the eastern slope of Cross Fell in the North Pennines and flows eastwards for to reach the North Sea in the North East of England. The modern-day history of the river has been tied with the industries ...
. Further lands were purchased by ICI in 1962 at Seal Sands, where land had been reclaimed from the sea, becoming the third large-scale chemical manufacturing site on Teesside.
Today all three Teesside chemical sites at Billingham, Wilton, and Seal Sands remain in use for large-scale chemical manufacture by the members of the Northeast of England Process Industry Cluster (NEPIC), and plastics and polymers continue to be manufactured there by Lotte Chemicals(
PET
A pet, or companion animal, is an animal kept primarily for a person's company or entertainment rather than as a working animal, livestock, or a laboratory animal. Popular pets are often considered to have attractive/ cute appearances, inte ...
),
SABIC (
HDPE),
Victrex (
PEEK
Polyether ether ketone (PEEK) is a beige coloured organic thermoplastic polymer in the polyaryletherketone (PAEK) family, used in engineering applications. It was invented in November 1978 and brought to market in the early 1980s by part of I ...
) and
Lucite International (
Perspex). Nylon 66 manufacture ceased on Teesside in 2008 with the
Invista manufacturing unit closed.
Petrochemical
Coke ovens used in chemical production at Billingham were replaced in 1962 by plants using the steam
naphtha
Naphtha (, recorded as less common or nonstandard in all dictionaries: ) is a flammable liquid hydrocarbon mixture. Generally, it is a fraction of crude oil, but it can also be produced from natural-gas condensates, petroleum distillates, and ...
process, which enabled use of crude oil as feedstock for a process known as cracking. This proved to be a much cheaper way to produce
ethylene
Ethylene (IUPAC name: ethene) is a hydrocarbon which has the formula or . It is a colourless, flammable gas with a faint "sweet and musky" odour when pure. It is the simplest alkene (a hydrocarbon with carbon–carbon bond, carbon–carbon doub ...
,
aromatics
Aromatic compounds or arenes are organic compounds "with a chemistry typified by benzene" and "cyclically conjugated."
The word "aromatic" originates from the past grouping of molecules based on odor, before their general chemical properties were ...
, petroleum derivatives and other chemicals such as
ammonia
Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the chemical formula, formula . A Binary compounds of hydrogen, stable binary hydride and the simplest pnictogen hydride, ammonia is a colourless gas with a distinctive pu ...
. From 1964 to 1969 four large oil refineries were erected at the mouth of the Tees, two by Phillips Petroleum and one each by ICI and Shell. Their main purpose was to supply Billingham's chemical industry.
A pipeline was built in 1968 for the transport of ethylene and linked chemical works on Teesside with chemical plants at Runcorn. Today, ConocoPhillips operate oil refinery sites while Ensus Energy and Harvest Energy have biorefineries, the latter two produce
biodiesel
Biodiesel is a renewable biofuel, a form of diesel fuel, derived from biological sources like vegetable oils, animal fats, or recycled greases, and consisting of long-chain fatty acid esters. It is typically made from fats.
The roots of bi ...
and
bioethanol as transport fuels.
SABIC operate the ethylene cracker at Wilton.
Metal works
Before 1846 Walbottle, Elswick, Birtley, Ridsdale, Hareshaw, Wylam, Consett, Stanhope, Crookhall, Tow-Law and Witton Park all had iron works
but the discovery of a rich seam of iron ore to the south of the region gradually drew iron and steel manufacture towards Teesside.
In 1850 iron ore was discovered in the
Cleveland Hills near
Eston
Eston is a former industrial town in the Redcar and Cleveland unitary area of North Yorkshire, England. It is part of Greater Eston, which includes the outlying settlements of Grangetown, North Yorkshire, Grangetown, Normanby, Redcar and Clevel ...
to the south of Middlesbrough and Iron gradually replaced coal as the lifeblood of Eston. The ore was discovered by geologist
John Marley and first used by John Vaughan, the principal
ironmaster
An ironmaster is the manager, and usually owner, of a forge or blast furnace for the processing of iron. It is a term mainly associated with the period of the Industrial Revolution, especially in Great Britain.
The ironmaster was usually a larg ...
of Middlesbrough who along with his German business partner Henry Bolckow had already established a small iron foundry and rolling mill using iron stone from Durham and the Yorkshire coast, with the new discovery prompting them to build Teesside's first blast furnace in 1851.
Many more iron works followed, such as those built in the region by
Losh, Wilson and Bell (see Sir Issac
Lowthian Bell) who in 1853 were operating 5 furnaces in the region.
The success of John Vaughan and Henry Bolckow's first blast furnace meant that by 1873 Middlesbrough was producing 2 million tonnes of pig iron a year. Iron was in big demand in Britain in the late 19th century, particularly for the rapid expansion of the railways. More and more blast furnaces were opened in the vicinity of Middlesbrough to meet this demand such that by the end of the century Teesside was producing about a third of the nation's iron output.
Middlesbrough, which became known by its nickname "
Ironopolis", was visited in 1862 by then prime minister
William Ewart Gladstone
William Ewart Gladstone ( ; 29 December 1809 – 19 May 1898) was a British politican, starting as Conservative MP for Newark and later becoming the leader of the Liberal Party (UK), Liberal Party.
In a career lasting over 60 years, he ...
who said "This remarkable place, the youngest child of England's enterprise, is an infant, but if an infant, an infant Hercules"
By the 1870s steel, a much stronger and more resilient metal, was in big demand and Middlesbrough had to compete with Sheffield as the major producer. In 1875 Bolckow and Vaughan opened the first Bessemer Steel plant in Middlesbrough and the River Tees then become known as "The Steel River"
leaving its old nickname "Ironopolis" behind. In 1881
Hugh Reid (Liberal politician) described how "The iron of Eston has diffused itself all over the world. it furnishes the railways of the world; it runs by neapolitan and papal dungeons; it startles the bandit in his haunt in cicilia; it crosses over the plains of Africa; it stretches over the plains of India. it has crept out of the Cleveland Hills where it has slept since Roman days, and now like a strong and invincible serpent, coils itself around the world"
By 1929 the great depression began to effect Britain and the famous name of Bolckow-Vaughan merged with neighbour Dorman-Long & Co. who then became Britain's biggest iron and steel maker and employed 33,000 people. In 1954 the post-war boom saw Dorman-Long build a state of the art steelworks at Lackenby and then new blast furnaces at Clay Lane. 1967 saw Dorman-Long become part of the nationalized British Steel Corporation as production boomed in Britain and in 1979 the largest blast furnace in Europe was erected at BSC's new Redcar plant. This plant which was subsequently acquired and operated by Corus, Tata Steel and then Sahaviriya Steel Industries (SSI) who are still the plant operating today.
British Steel Industrial Archive
The British Steel Collection, now housed at
Teesside University
Teesside University is a public university with its main campus in Middlesbrough, North Yorkshire in North East England. It was officially opened as ''Constantine Technical College'' in 1930, before becoming a polytechnic in 1969, and finally g ...
, contains the records of over forty iron and steel companies based in the Teesside area of the North East of England and covers the period –1970. The history of Teesside and its rapid growth during the 19th century is directly linked to the expansion of the railways from Darlington and Stockton towards the mouth of the Tees estuary and the subsequent discovery of ironstone in the Cleveland Hills which attracted iron companies to the area. The British Steel Collection archives the company records of iron and steel companies such as
Bolckow & Vaughan,
Bell Brothers,
Cochrane & Co. Ltd.,
Dorman, Long & Co. Ltd.,
South Durham Steel & Iron Co. Ltd.,
Cargo Fleet Iron Company and
Skinningrove Iron Co. Ltd. With records of associated institutions such as the Middlesbrough Exchange Co. Ltd. and the Cleveland Mineowners' Association also being preserved.
Uses in local culture
Teesside continues to be used locally to refer to the entire urban area and the name can still be seen in the following uses:

*
Teesside University
Teesside University is a public university with its main campus in Middlesbrough, North Yorkshire in North East England. It was officially opened as ''Constantine Technical College'' in 1930, before becoming a polytechnic in 1969, and finally g ...
*
Teesside retail and leisure park which was founded by the now defunct
Teesside Development Corporation
*
Teesside International Airport
Teesside International Airport , formerly Durham Tees Valley Airport, is a small international airport in the Borough of Darlington, County Durham, England. It primarily serves Teesside (including Middlesbrough and Stockton-on-Tees), south and ...
and
Teesside Airport railway station
Teesside Airport railway station is on the Tees Valley line which runs between and via in County Durham, England. The station is east of Darlington and about from Teesside International Airport, which owns the station. It is managed by Nort ...
, the local airport and railway station serving the airport
*
BBC Radio Tees broadcast across the area from its studios located in
Middlesbrough
Middlesbrough ( ), colloquially known as Boro, is a port town in the Borough of Middlesbrough, North Yorkshire, England. Lying to the south of the River Tees, Middlesbrough forms part of the Teesside Built up area, built-up area and the Tees Va ...
*
Local TV Teesside, a local-based television channel
*
TeessideLive, online version of ''The Gazette'', a regional newspaper
*Teesside 3t Training centre,
long-standing processing and heavy industries
*’T-Side’, a clothing brand featuring iconic parts of the area.
*''Teesside'' continues to be used as signed destination on
UK road signs. It is only once the boroughs are entered that local town names are used. This is due to the County Borough of Teesside being active during the building of multiple roads at the time.
It has also been adopted for various other purposes as a synonym for the former
county of Cleveland.
See also
*
Carbon storage in the North Sea
*
Gilkes Wilson and Company
*
Teesdale
*
Teesport
Teesport is a large sea port located in the unitary authority of Redcar and Cleveland, in the ceremonial county of North Yorkshire, Northern England.
Owned by PD Ports, it is located approximately inland from the North Sea and east of Middle ...
*
Teesside Fettlers
*
Trolleybuses in Teesside
References
External links
{{commons category
BBC Tees – the latest local news, sport, entertainment, features, faith, travel and weather.
Geography of County Durham
Geography of North Yorkshire
Places in the Tees Valley
Urban areas of England
Former civil parishes in County Durham