The M4 corridor is an area in the United Kingdom adjacent to the

M4 motorway The M4, originally the London-South Wales Motorway, is a motorway in the United Kingdom running from west London to southwest Wales. The English section to the Severn Bridge was constructed between 1961 and 1971; the Welsh element was largely ...

, which runs from

London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...

South Wales South Wales ( cy, De Cymru) is a loosely defined region of Wales bordered by England to the east and mid Wales to the north. Generally considered to include the historic counties of Glamorgan and Monmouthshire, south Wales extends westwards ...

. It is a major high-technology hub. Important cities and towns linked by the M4 include (from east to west) London,

Slough Slough () is a town and unparished area in the unitary authority of the same name in Berkshire, England, bordering west London. It lies in the Thames Valley, west of central London and north-east of Reading, at the intersection of the ...

Bracknell Bracknell () is a large town and civil parish in Berkshire, England, the westernmost area within the Greater London Urban Area and the administrative centre of the Borough of Bracknell Forest. It lies to the east of Reading, south of Maiden ...

Maidenhead Maidenhead is a market town in the Royal Borough of Windsor and Maidenhead in the county of Berkshire, England, on the southwestern bank of the River Thames. It had an estimated population of 70,374 and forms part of the border with southern Bu ...

Reading Reading is the process of taking in the sense or meaning of letters, symbols, etc., especially by sight or touch. For educators and researchers, reading is a multifaceted process involving such areas as word recognition, orthography (spell ...

, Newbury,

Swindon Swindon () is a town and unitary authority with borough status in Wiltshire, England. As of the 2021 Census, the population of Swindon was 201,669, making it the largest town in the county. The Swindon unitary authority area had a population ...

Bath Bath may refer to: * Bathing, immersion in a fluid ** Bathtub, a large open container for water, in which a person may wash their body ** Public bathing, a public place where people bathe * Thermae, ancient Roman public bathing facilities Pl ...

Bristol Bristol () is a City status in the United Kingdom, city, Ceremonial counties of England, ceremonial county and unitary authority in England. Situated on the River Avon, Bristol, River Avon, it is bordered by the ceremonial counties of Glouces ...

, Newport,

Cardiff Cardiff (; cy, Caerdydd ) is the capital city, capital and List of urban areas in the United Kingdom, largest city of Wales. It forms a Principal areas of Wales, principal area, officially known as the City and County of Cardiff ( cy, Dinas a ...

Port Talbot Port Talbot (, ) is a town and community in the county borough of Neath Port Talbot, Wales, situated on the east side of Swansea Bay, approximately from Swansea. The Port Talbot Steelworks covers a large area of land which dominates the south ...

and

Swansea Swansea (; cy, Abertawe ) is a coastal city and the second-largest city of 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 C ...

. The area is also served by the

Great Western Main Line The Great Western Main Line (GWML) is a main line railway in England that runs westwards from London Paddington to . It connects to other main lines such as those from Reading to Penzance and Swindon to Swansea. Opened in 1841, it was the o ...

, the

South Wales Main Line The South Wales Main Line ( cy, Prif Linell De Cymru), originally known as the London, Bristol and South Wales Direct Railway or simply as the Bristol and South Wales Direct Railway, is a branch of the Great Western Main Line in Great Britain. ...

, and

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 ...

. Technology companies with major operations in the area include

Adobe Adobe ( ; ) is a building material made from earth and organic materials. is Spanish for '' mudbrick''. In some English-speaking regions of Spanish heritage, such as the Southwestern United States, the term is used to refer to any kind of ...

Amazon Amazon most often refers to: * Amazons, a tribe of female warriors in Greek mythology * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon River, in South America * Amazon (company), an American multinational technolog ...

Citrix Systems Citrix Systems, Inc. is an American multinational corporation, multinational cloud computing and virtualization technology company that provides server, application and desktop virtualization, networking, software as a service (SaaS), and cloud ...

Dell Dell is an American based technology company. It develops, sells, repairs, and supports computers and related products and services. Dell is owned by its parent company, Dell Technologies. Dell sells personal computers (PCs), servers, data ...

Huawei Huawei Technologies Co., Ltd. ( ; ) is a Chinese multinational technology corporation headquartered in Shenzhen, Guangdong, China. It designs, develops, produces and sells telecommunications equipment, consumer electronics and various sma ...

Lexmark Lexmark International, Inc. is a privately held American company that manufactures laser printers and imaging products. The company is headquartered in Lexington, Kentucky. Since 2016 it has been jointly owned by a consortium of three multination ...

, LG,

Microsoft Microsoft Corporation is an American multinational technology corporation producing computer software, consumer electronics, personal computers, and related services headquartered at the Microsoft Redmond campus located in Redmond, Washi ...

Novell Novell, Inc. was an American software and services company headquartered in Provo, Utah, that existed from 1980 until 2014. Its most significant product was the multi- platform network operating system known as Novell NetWare. Under the le ...

Nvidia Nvidia CorporationOfficially written as NVIDIA and stylized in its logo as VIDIA with the lowercase "n" the same height as the uppercase "VIDIA"; formerly stylized as VIDIA with a large italicized lowercase "n" on products from the mid 1990s to ...

, O2,

Oracle An oracle is a person or agency considered to provide wise and insightful counsel or prophetic predictions, most notably including precognition of the future, inspired by deities. As such, it is a form of divination. Description The word ...

Panasonic formerly between 1935 and 2008 and the first incarnation of between 2008 and 2022, is a major Japanese multinational conglomerate corporation, headquartered in Kadoma, Osaka. It was founded by Kōnosuke Matsushita in 1918 as a lightbulb ...

, SAP, and

Symantec Symantec may refer to: *An American consumer software company now known as Gen Digital Inc. *A brand of enterprise security software purchased by Broadcom Inc. Broadcom Inc. is an American designer, developer, manufacturer and global supplier ...

England

Reading International Business Park - geograph

The eastern end of the English M4 corridor is home to a large number of technology companies, particularly in

Berkshire Berkshire ( ; in the 17th century sometimes spelt phonetically as Barkeshire; abbreviated Berks.) is a historic county in South East England. One of the home counties, Berkshire was recognised by Queen Elizabeth II as the Royal County of Ber ...

and the

Thames Valley The Thames Valley is an informally-defined sub-region of South East England, centred on the River Thames west of London, with Oxford as a major centre. Its boundaries vary with context. The area is a major tourist destination and economic hub, ...

. For this reason this part of the M4 corridor is sometimes described as England's "

Silicon Valley Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo Cou ...

Windsor Windsor may refer to: Places Australia * Windsor, New South Wales ** Municipality of Windsor, a former local government area * Windsor, Queensland, a suburb of Brisbane, Queensland **Shire of Windsor, a former local government authority around Wi ...

and Newbury are the main towns in the Berkshire stretch of the M4. Reading is home to many information technology and financial services businesses, including

Cisco Cisco Systems, Inc., commonly known as Cisco, is an American-based multinational digital communications technology conglomerate corporation headquartered in San Jose, California. Cisco develops, manufactures, and sells networking hardware, ...

ING Direct The ING Group ( nl, ING Groep) is a Dutch multinational banking and financial services corporation headquartered in Amsterdam. Its primary businesses are retail banking, direct banking, commercial banking, investment banking, wholesale banki ...

, Prudential, Yell Group and

Ericsson (lit. "Telephone Stock Company of LM Ericsson"), commonly known as Ericsson, is a Swedish multinational networking and telecommunications company headquartered in Stockholm. The company sells infrastructure, software, and services in inform ...

Vodafone Vodafone Group plc () is a British multinational telecommunications company. Its registered office and global headquarters are in Newbury, Berkshire, England. It predominantly operates services in Asia, Africa, Europe, and Oceania. , Vod ...

has a major corporate campus in Newbury,

O2 plc O2 (typeset as O2) is a global brand name owned by the Spanish telecommunications company Telefónica. The company uses the O2 brand for its subsidiaries in the United Kingdom and Germany. Since 2018, it is also used as an online-only flanker ...

is in Slough. Maidenhead is the home of

Hutchison 3G 3 or Three is a global brand name owned by Hutchison 3G Enterprises S.A.R.L., under which several UMTS-based mobile phone networks and broadband internet providers operate in Hong Kong, Macau, Austria, Denmark, Indonesia, Ireland, Sweden, and ...

UK's headquarters and Tesla Motors' UK head office. Investment has gradually spread westwards since the 1980s. In the west, the interchange of the M4 and M5 motorways north of Bristol had seen considerable growth of industries by the mid 1990s.

Wales

The major Welsh towns and cities along the M4 corridor are

Bridgend Bridgend (; cy, Pen-y-bont ar Ogwr or just , meaning "the end of the bridge on the Ogmore") is a town in Bridgend County Borough in Wales, west of Cardiff and east of Swansea. The town is named after the medieval bridge over the River Og ...

Llanelli Llanelli ("St Elli's Parish"; ) is a market town and the largest community in Carmarthenshire and the preserved county of Dyfed, Wales. It is located on the Loughor estuary north-west of Swansea and south-east of the county town, Carma ...

Neath Neath (; cy, Castell-nedd) is a market town and community situated in the Neath Port Talbot County Borough, Wales. The town had a population of 50,658 in 2011. The community of the parish of Neath had a population of 19,258 in 2011. Historica ...

, Newport,

and

. South Wales is an industrial heartland of the UK. The 1980s and 1990s saw the development of the Swansea Enterprise Park. The

Celtic Manor Resort Celtic Manor Resort is a golf, spa and leisure hotel and resort in the city of Newport, South East Wales. Owned by Sir Terry Matthews, the resort is located on the south-facing side of Christchurch Hill in eastern Newport, near Junction 24 ...

, adjacent to the M4 in Newport, has received significant investment and hosted the 2010

Ryder Cup The Ryder Cup is a biennial men's golf competition between teams from Europe and the United States. The competition is contested every two years with the venue alternating between courses in the United States and Europe. The Ryder Cup is named af ...

. Newport has seen significant growth in the electronics industry since the late 1980s. The 1990s saw significant investment in

, such as in Cardiff Gate and the

Cardiff Bay Cardiff Bay ( cy, Bae Caerdydd; historically Tiger Bay; colloquially "The Bay") is an area and freshwater lake in Cardiff, Wales. The site of a former tidal bay and estuary, it serves as the river mouth of the River Taff and Ely. The body of ...

area. One site of note on the M4 corridor is

Port Talbot Steelworks Port Talbot Steelworks is an integrated steel production plant in Port Talbot, West Glamorgan, Wales, capable of producing nearly 5 million tonnes of steel slab per annum. This makes it the larger of the two major steel plants in the UK and one o ...

– the largest steel producer in the UK and one of the biggest in Europe. The opening of the Second Severn Crossing in 1996 resulted in the previous M4 and

bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually someth ...

, serving

Chepstow Chepstow ( cy, Cas-gwent) is a town and community in Monmouthshire, Wales, adjoining the border with Gloucestershire, England. It is located on the tidal River Wye, about above its confluence with the River Severn, and adjoining the wester ...

, being renumbered the M48, although the area is still generally considered as falling within the M4 corridor. Since the start of the 21st century there has been evidence of more investment west of Cardiff, such as: *

Aberavon Beach Aberavon Beach ( cy, Traeth Aberafan), also known as Aberavon Sands, is a three-mile (5 km) stretch of sandy beach on the north-eastern edge of Swansea Bay in Port Talbot, Wales. With its high breaker waves, it is popular with surfers. Aber ...

Baglan Industrial Park Aberavon ( cy, Aberafan) is a town and community in Neath Port Talbot county borough, Wales. The town derived its name from being near the mouth of the river Afan, which also gave its name to a medieval lordship. Today it is essentially a di ...

Baglan Energy Park Baglan Bay ''(Welsh: Bae Baglan)'' is a part of the Swansea Bay coastline and a district of Neath Port Talbot county borough, Wales. Baglan Bay is also the name of a local government community. Baglan Bay is served by the M4 Motorway and the ...

Amazon.co.uk Amazon.com, Inc. ( ) is an American multinational technology company focusing on e-commerce, cloud computing, online advertising, digital streaming, and artificial intelligence. It has been referred to as "one of the most influential econo ...

fulfilment centre at Crymlyn Burrows *

Maritime Quarter The Maritime Quarter (including Swansea Marina) is a residential area of Swansea, Wales, UK located immediately south of the city centre shopping core. It falls within Swansea's Castle ward. The area is bounded by Brynmill to the west, Swan ...

** SA1 development **

Swansea Vale Swansea Vale ( cy, Bro Abertawe) is a mixed used new suburb development site in Swansea, Wales. The area is bounded east by Birchgrove; south by Swansea Enterprise Park, west by the River Tawe and north by the M4 motorway. The development is a p ...

Felindre Felindre is a rural village in southern Wales. Felindre is located in the far north of Swansea, in the electoral ward of Mawr. The nearby Lower Lliw Reservoirs are a popular venue for walking and fishing. The water mill in the village was workin ...

** Dafen/Llanelli Gate **Parc Hendre ** Parc Trostre and

Parc Pemberton Pemberton is an area situated east of Llanelli in Carmarthenshire, Wales. It is part of the Llanelli Rural (Welsh-Llanelli Wledig) community bordering Llanelli and the villages of Cwmcarnhywel, Dafen, Cefncaeau and the outskirts of Llanelli town ...

Llanelli Waterside Llanelli Waterside ( cy, Morlan Elli) is the marketing name given to the new suburb development in the coastal strip south west of the town of Llanelli, Wales. The scheme is a joint development between Carmarthenshire County Council and the Wels ...

, including North Dock and Delta Lakes **

Ffos Las racecourse The Ffos Las racecourse (''strictly'': Ffos Las Racecourse & Conference Centre) is a Welsh horse racing, equestrian sports and conferencing venue situated in Ffos Las, Wales. The Ffos Las racecourse was built at the site of an open cast coal mine ...

Cross Hands Cross Hands is a town in Carmarthenshire, Wales, approximately from Carmarthen. Cross Hands Public Hall is one of only three of its kind in Wales. The Public Hall was erected in 1920 and designed by an unknown Italian designer in the classic A ...

**Cross Hands Food Park **Cross Hands Business Park

References

External links

The Guardian: Advantages of the M4 corridor as a business location
{{coord , 51.5, -1.5, scale:1000000_region:GB, display=title Economy of England Economy of Wales High-technology business districts in the United Kingdom Information technology places M4 motorway Regions of England Regions of Wales Science and technology in Berkshire South East England

England

Wales

See also

References

External links