List of companies of the United Kingdom A-J

Largest companies

Notable companies

0—9

• 104 Films — film production. Established in 2004, its headquarters is in Birmingham.
• 24seven — energy company, 2000–2003. Its parent companies were London Electricity, and TXU Europe. In 2003 it became part of LE Group.
• 3 Mills Studios — centre for film and TV production. It is located in London.

  A

• AAH Pharmaceuticals — pharmaceuticals wholesaler, formerly anthracite producer and supplier, building materials, transport, wharehousing, and environmental services. Established in 1892, its headquarters is in Coventry. It was formerly named Amalgamated Anthracite Collieries. In 1995 it was bought by Celesio AG.
• Aardman Animations - animation production. Established in 1972, its headquarters is in Bristol.
• Abbey National — financial services company, 1944–2010. Its headquarters is in London. Also known as Abbey, it was formed by the merger of the Abbey Road Building Society with the National Building Society. In 2010 it was subsumed into Santander UK.
• AbbottVision — film and TV production. Established in 2008, its headquarters is in Manchester.
• ABC Cinemas — cinema chain, 1927—2017.
• Abcam — biotechnology and life sciences company. It was established in 1998.
• Abcodia — biotechnology company. Established in 2010, its headquarters is in London.
• Aberdeen Asset Management — investment management company, 1983–2017. Its headquarters was in Aberdeen, Scotland. In 2017 it was merged with Standard Life to form Standard Life Aberdeen plc.
• Academy Films — film and TV production. Established in 1985, its headquarters was in London.
• Acteon Group — subsea services company. Established in 2004, its headquarters is in Norwich, Norfolk. It was formed from the UWG Group.
• Adam and Company — financial services company. Established in 1983, its headquarters is in Edinburgh, Scotland. Its parent company is Royal Bank of Scotland Group. In 2018 the retail banking assets of Royal Bank of Scotland were transferred to Adam and Company which was renamed as Royal Bank of Scotland with Adam and Company continuing as a Royal Bank of Scotland banking brand in Scotland.
• Adam Equipment — manufacturing company. It was established in 1972.
• Adelphi Films — film production and distribution. It was established in 1939.
• Affinity Water — utility company. Established in 2012, its headquarters is in Hatfield, Hertfordshire. It was formed by the purchase and merger of Veolia Water Central, Veolia Water Southeast, and Veolia Water East.
• AfriMobile — telecommunications company. It was established in 2012.
• African Potash — mining, production, and distribution of fertiliser. It was established in 2011.
• Air Navigation and Engineering Company — aircraft, and cyclecar manufacturer, 1919—1927. Its headquarters was in Addlestone, Surrey. It was formerly the Bleriot & SPAD Manufacturing Company.
• Alex Wilson & Company — engine manufacturers, see Vauxhall Motors.
• Allen & Hanburys — pharmaceuticals manufacturer, 1715-1958. Headquartered in London, it was absorbed by Glaxo Laboratories in 1958.
• Alliance & Leicester — financial services company, 1985–2011. Its headquarters was in Narborough, Leicestershire. It was formed by the merger of the Alliance Building Society with the Leicester Building Society. In 2011 it was subsumed into Santander UK.
• Allied Film Makers — film production. Established in 1959, it is defunct.
• Allied Stars Ltd — film production. It was established in the late 1970s.
• Amersham plc — radiopharmaceutical products for nuclear medicine, 1946-2003. Its headquarters was in Amersham, Buckinghamshire. It was previously known as The Radiochemical Centre Amersham, Amersham International, and Nycomed Amersham. In 2003 it was acquired by General Electric and incorporated into GE Healthcare.
• Amicus Productions — film production, 1962—1977. It was based at Shepperton Studios.
• Andrew Knowles and Sons — coal mining, c1805–1929. It became part of Manchester Collieries.
• Anglesey Mining — mining company
• Anglian Water — utility company. Established in 1979, its headquarters is in Huntingdon, Cambridgeshire. It was preceded by Anglian Water Authority. Its parent company is AWG plc.
• Anglian Water Authority — state owned utility company, 1974–1979. It was succeeded by Anglian Water.
• Anglo-Amalgamated — film production and distribution, 1945—1971.
• Anglo—EMI Film Distributors Ltd — film production and distribution, see EMI Films.
• Anglo American — British multinational mining company. Established in 1917, its headquarters are in London, UK and Johannesburg, South Africa. Its 2019 revenue was $29.8 billion, with net income of $4.5 billion.
• Anglo Pacific Group — mining. Established in 1967, its headquarters is in London. It was formerly known as Diversified Bank Shares Limited.
• AP Films —, television and film production, publishing, 1957—1977. Its headquarters was in Maidenhead, Berkshire. It later became Century 21 Productions.
• Apollo Cinemas — cinema chain, 2002—2013.
• Arash Motor Company — automobile manufacturer. Established in 1999, its headquarters is in Newmarket, Suffolk. It was formerly named Farboud Limited.
• Archers Film Productions — film production, 1943—1957.
• Argos — catalogue retailer. Established in 1972, its headquarters is in Milton Keynes, Buckinghamshire. Its parent company is Sainsbury's. Its 2016 revenue was £4.1 billion and its 2016 operating income was £83.1 million.
• Aria Films — film production, finance, consultancy. Established in 2002, its headquarters is in London.
• Aricom — mining and metals, 2003–2009/10. Its headquarters was in London. It was formerly part of Peter Hambro Mining who, as Petropavlovsk reacquired it in 2009.
• Ariel Motor Company — automobile and motor bike manufacturer. Established in 1991 its headquarters is in Crewkerne, Somerset. It was formerly named Solocrest Ltd.
• Armstrong Siddeley — manufacturer of automobiles, aircraft engines, light engineering 1919—1960. Headquartered in Coventry, it was established by the merger of Armstrong Whitworth with Siddeley-Deasy. There were later mergers/takeovers with Hawker Aircraft, and Bristol Aero Engines. In 1960 it became Bristol Siddeley.
• Armstrong-CCM Motorcycles — motorcycle manufacturers, 1980—1987. Headquartered in Bolton, it was formerly known as Clews Competition Motorcycles.
• Arrival — electric vehicle manufacturer, specialising in commercial vehicles. Established in 2015, its headquarters is in Yarnton, Oxfordshire. It was formerly named Charge Automotive.
• Arrol-Johnston — automobile manufacturer, 1895—1931. Its headquarters was in Glasgow, Scotland. It was formerly the Mo-Car Syndicate. In 1927 it merged with Aster to become Arrol-Aster.
• Arrol-Aster — automobile manufacturer, 1927—1931. Headquartered in Dumfries, Scotland, it was formed by the merger of Arrol-Johnston and Aster.
• Ascari Cars — automobile manufacturer, 1995—2010. Its headquarters was in Banbury, Oxfordshire.
• Associated British Picture Corporation — film production, distribution, and exhibition, 1927—1970. It was originally British International Pictures ).
• Associated Motor Cycles — parent company of motorcycle companies including: Matchless, A. J. Stevens & Co. Francis-Barnett, James Cycle Co, Norton, and Sunbeam, 1938—1966.
• Aster Engineering Co. Ltd — automobile, and aircraft engines manufacturer, 1913—1931. It was headquartered in Wembley, London, then Dumfries, Scotland. It was formerly Begbie Engineering. In 1927 it merged with Arrol-Johnston.
• Astley and Bedford Collieries — coal mining, c1840s–1850s. Its headquarters was in Bedford, Leigh.
• Astley and Tyldesley Collieries — coal mining, 1900–1929. It became part of Manchester Collieries.
• Aston Martin — automobile manufacturer, luxury goods, previously aircraft components during WWII. Established in 1913, its headquarters is in Gaydon, Warwickshire. Its 2019 revenue was £997 million, with net income of –£104 million.
• Astra Films — film production and distribution. Its headquarters is in Leeds, Yorkshire.
• AstraZeneca — UK-Swedish multinational pharmaceutical and biopharmaceutical company. Established in 1999, its headquarters is in Cambridge. It was formed by the merger of Astra AB and Zeneca. Its 2019 revenue was $24.3 billion, with net income of $1.2 billion.
• Ausfod Motor Engineering Co Ltd — automobile manufacturer, 1947—1948. Its headquarters was in Chorlton-on-Medlock, Manchester.
• Aura Films — film production. Established in 2011, its headquarters is in Colchester, Essex.
• Austin-Healey — automobile manufacturer, 1952—1972. It was established as a joint venture between British Motor Corporation and Donald Healey Motor Company.
• Austin Motor Company — automobiles, and wartime manufacturer of aircraft, shells, heavy guns and military vehicles, 1905—1952. Its headquarters was in Longbridge, Birmingham. In 1952 it merged with Morris Motors to become the British Motor Corporation.
• Austin Rover Group — automobile manufacturer, 1982-1989. Headquartered in Longbridge, Birmingham, it was a subsidiary of British Leyland. 1n 1989 it became Rover Group.
• Auto-Sleepers — camper van motor homes manufacturer. Established in 1961, its headquarters is in Willersey, Gloucestershire.
• Avant-garde Pictures - film production. It was established in 2011.
• AWG plc — holding company that is parent to Anglian Water. Headquartered in Huntingdon, it is owned by Osprey Consortium.
• Axon Automotive — automobile and components manufacturer. Its headquarters is in Northampton, Northamptonshire.

  B

• BAE Systems — British multinational defence, security, and aerospace company. Established in 1999, its headquarters are in London, and Farnborough, Hampshire. It was formed from the merger of British Aerospace and Marconi Electronic Systems. In 2019 its revenue was £18.3 billion, with net income of £1.5 billion.
• BAE Systems Applied Intelligence — international business and consulting company. Established in 1971, its headquarters is in Guildford, Surrey. It was formally known as Smith Associates, and Detica. Its parent company is BAE Systems.
• Baillie Gifford & Co — investment management company. Established in 1908, its headquarters is in Edinburgh, Scotland. It manages the Scottish Mortgage Investment Trust.
• Bamforth & Co Ltd - film production, and publishing company. Established in 1870 in Holmfirth, Yorkshire, its headquarters is now in Leeds, Yorkshire.
• Bank of Scotland — financial services company. Established in 1695, its headquarters is at The Mound, Edinburgh, Scotland. It was previously part of HBOS. Its parent company is Lloyds Banking Group.
• Banks Group — mining, energy, and property development company. Established in 1976, its headquarters is in Durham.
• Banter Media — new media, music recording, and film production company. Established in 2009, its headquarters is in Manchester.
• Barclays plc — financial services company. Established in 1690, its headquarters is in London. In 2019 its revenue was £21.6 billion, with a net income of £3.3 billion.
• BBC — public service broadcasting statutory corporation. Established in 1922, its headquarters is at Broadcasting House, London. It was first formed as the British Broadcasting Company. In 2019 its revenue was £4.8 billion, with a net income of -£69 million.
• BBC Films — film production company. Established in 1990, its headquarters is in London. Its parent company is the BBC.
• BBC Studios — television production and distribution company. Established in 2015, its headquarters is at Television Centre, London. In 2018 it subsumed BBC Worldwide. Its parent company is the BBC.
• BBC Studioworks — television studios, post-production, and related services company. Established in 1998, its headquarters is in London. Formerly known as BBC Resources Limited, and BBC Studios and Post Production Limited, its parent company is the BBC.
• Beauford automobiles — car kit manufacturing company. Established in Up Holland, its headquarters is in Stoke-on-Trent.
• Bede Gaming — software, and gambling company. Established in 2011, its headquarters is in Newcastle upon Tyne.
• Bedford Colliery — coal mine, c1874–1929. Located in Bedford, Leigh, it became part of Manchester Collieries.
• Bedlam Productions — film and TV production company. Established in 2009, its headquarters is in London.
• Beecham Group — manufacturing company 1859-1989. Its headquarters was in London. In 1989 Beecham Group and SmithKline Beckman merged to form SmithKline Beecham, and in 2000, they merged with GlaxoWellcome to form GlaxoSmithKline.
• Beefeater — hospitality company. Established in 1974, its headquarters is in Dunstable, Bedfordshire. Its parent company is Whitbread.
• Bell Pottinger — public relations, and advertising company, 1988—2017. Its headquarters was in London.
• Bentley — automobile manufacturing company. Established in 1919 in London, its headquarters is in Crewe. Between 1931–1970 it was owned by Rolls-Royce. From 1980 to 1998 it was owned by Vickers. From 1998 it is owned by Volkswagen.
• Beowulf Mining — mining company. Established in 1978, it was formerly known as Beowulf Gold.
• bet365 — online gambling company. Established in 2000, its headquarters is in Stoke-on-Trent.
• Betable — gambling, and social gaming company. Established in 2008, its headquarters is in London.
• Betfair — online gambling company. Established in 2000, its headquarters is in London.
• Betfred — gambling company. Established in 1967 in Salford, its headquarters is in Warrington.
• BetonSports — online gambling company. Established in 1995, its headquarters is in London.
• BFCS — commercials film production company, 1966—2001. Headquartered in London, it was first named Brooks Baker Fulford.
• BHP — Anglo/Australian multinational mining, metals, and petroleum company. Established in 1885, its headquarters are in Melbourne, Australia and London. It was formerly known as BHP Billiton.
• Big Talk Productions — film and TV production company. Established in 1994, its headquarters is in London.
• Bigballs Media — football media company. Established in 2006, its headquarters is in London. It is now named Copa90.
• Biocompatibles — pharmaceutical company. Established in 1984, its headquarters is in Farnham, Surrey. In 2010 it was acquired by BTG plc.
• Bio Products Laboratory — pharmaceuticals company. Established in 1954 in Elstree. It was formerly part of the NHS; but is now owned by Creat Group.
• Birmingham and Staffordshire Gas Light Company — gas production and supply company, 1825–1875.
• Birmingham Gas Light and Coke Company — gas production and supply company, 1819-1875.
• Birmingham Midshires — financial services company. It was formerly a building society. Established in 1986, its headquarters is in Wolverhampton. It was formed by the merger of the Birmingham and Bridgwater Building Society with the Midshires Building Society. It has become a division of Lloyds Banking Group.
• Bisichi Mining — mining and property corporation. Established in 1910, its headquarters is in London.
• Black Camel Pictures — film production company. Its headquarters is in Glasgow, Scotland.
• Blakeley's Productions - film production company. See Mancunian Films.
• Bleep — online record store company. Created by Warp Records), it was established in 2004.
• Blink — advertising, and music videos company. Established in 1985, its headquarters is in London.
• Blueprint Pictures — film production company. Established in 2005, its headquarters is in London.
• bolexbrothers — animation film production company. Established in 1993, its headquarters is in Bristol.
• Bolckow, Vaughan — mining, ironmaking, and steel production company, 1840-1929. Its headquarters was in Middlesbrough.
• Bolsover Colliery Company — coal mining company, 1889–1947. Headquartered in Bolsover, Derbyshire, in 1947 it was nationalised and became part of the National Coal Board.
• Boots UK — pharmaceutical retailer and manufacturer, health and beauty, and photography company. Established in 1849, its headquarters is in Nottingham. It was formerly known as Boots the Chemists, and Boots Pure Drugs Company. Since 2014 it is a subsidiary of Walgreens Boots Alliance.
• Bourne Leisure — leisure company. Established in 1964 in Whitstable, its headquarters is in Hemel Hempstead, Hertfordshire.
• Bournemouth Water — utility company. Established in 1863, its headquarters is in Bournemouth, Dorset. Its parent company is South West Water which is owned by the Pennon Group.
• Bowler Manufacturing — automobile manufacturing company. Established in 1985, its headquarters is in Belper, Derbyshire.
• Bradford & Bingley — financial services company, 1964–2010. Formerly a building society, its headquarters was in Bingley, West Yorkshire. It was formed by the merger of the Bradford Equitable Building Society with the Bingley Permanent Building Society. It was nationalised in 2008, and in 2010 the savings business was subsumed by Santander Group, while the mortgage business was merged with Northern Rock to form UK Asset Resolution.
• Brazil Iron — metals and mining company. Established in 2000, its headquarters is in London.
• Brewers Fayre — hospitality company. Established in 1979, its headquarters is in Dunstable, Bedfordshire. Its parent company is Whitbread.
• Bridgewater Collieries — coal mining company, 1921–1929. It became part of Manchester Collieries.
• Briggs Automotive Company — automobile manufacturing company. Established in 2009, its headquarters is in Speke, Liverpool.
• Bristol Water — utility company. Established in 1846, its headquarters is in Bristol. It was formerly known as the Bristol Waterworks Company.
• British Aerospace — aircraft, munitions, and defence systems manufacturing company, 1977–1999. Its headquarters was in Farnborough, Hampshire. It was formed from the nationalisation and merger of the British Aircraft Corporation, Hawker Siddeley Aviation, Hawker Siddeley Dynamics, and Scottish Aviation. In 1999 it was merged with Marconi Electronic Systems to form BAE Systems.
• British Airways — airline company. Established in 1974, its headquarters is Waterside, Harmondsworth. It was formed from the merger of British Overseas Airways Corporation, British European Airways, Cambrian Airways and Northeast Airlines. Its parent company is International Airlines Group.
• British Aluminium — aluminium production company, 1894-2007. It was also known as British Alcan Aluminium.
• British American Tobacco — cigarette and tobacco manufacturing company. Established in 1902, its headquarters is in London. It was formed when the Imperial Tobacco Company and the American Tobacco Company created a joint venture, the British-American Tobacco Company. Its 2019 revenue was £25.8 billion, with net income of £1.8 billion.
• British and Colonial Films — film production company, 1908—1924. Headquartered in London, it was first named British and Colonial Kinematograph Company.
• British and Dominions Imperial Studios — film production company, 1929—1936. Its headquarters was in Borehamwood, Hertfordshire.
• British Biotech — biotechnology company 1986–2003. Its headquarters was in Oxford. In 2003 it was merged into Ribo Targets and then into Vernalis plc.
• British Coal — nationalised coal mining corporation, 1946-1997. It was formerly known as The National Coal Board. It was privatised and succeeded by UK Coal.
• British Energy — energy company, 1995–2009. Its headquarters was in London. It was acquired and subsumed by Electricite de France.
• British Gas Corporation — state owned energy company, 1972–1986. It was formed from the 12 Regional Coal Boards. In 1986 it was privatised to become British Gas plc.
• British Gas plc — energy supplier, and home services company, 1986–1997. It was formed from the privatisation of the British Gas Corporation. In 1997 it was demerged into Centrica, BG Group, and Transco.
• British Instructional Films — film production company, 1919—1932.
• British International Pictures — film production, distribution, and exhibition company. See Associated British Picture Corporation.
• British Land — real estate company. Established in 1856, its headquarters is in London. It was formed as an offshoot of the National Freehold Land Society. In 2019 its revenue was £554 million, with net income of £320 million.
• British Leyland — automobile manufacturing and engineering company, 1965—1986. Its headquarters were in Longbridge, Birmingham, and Cowley, Oxfordshire. Also known as BLMC Ltd, it was first established with the merger of Leyland Motors, and British Motor Holdings. In 1986 it was renamed as The Rover Group, and later as MG Rover Group.
• British Lion Films — film production and distribution company. Established in 1919, it was first named British Lion Film Corporation Ltd..
• British Steel Limited — steel company. Established in 2016, it was formed from the sale of long steel production by Tata Steel Europe to Greybull Capital. Its parent company is Jingye Group.
• British Steel plc — steel production company, 1967–1999. Formerly known as the British Steel Corporation, it was formed from the nationalisation of 14 private steel companies. It was privatised in 1988, and in 1999 it was merged with Koninklijke Hoogovens to form Corus Group.
• British Super Films — film production company. See G.B. Samuelson Productions.
• British Transport Films — documentary film production company. It was established in 1949.
• Britannia Building Society — mutual building society, 1856–2009. Its headquarters was in Leek, Staffordshire. It was formed as the Leek and Morlands Permanent Benefit Building Society. Through a series of mergers it later became the Leek and Westbourne, the Westbourne and Eastern Counties, and in 1975 the Britannia Building Society. In 2009 it was merged into The Co-operative Banking Group.
• Brooke Cars — automobile manufacturing company. Established in 2002, its headquarters is in Honiton, Devon.
• Brooke Marine — ship building company, 1874—1992. It was also an automobile manufacturer from 1901 to 1913, and a car engines manufacturer until 1938. Headquartered in Lowestoft, Suffolk, it was also known as JW Brooke & Co, and Brooke Yachts.
• Brooks Baker Fulford — commercials films productions company. See BFCS.
• Brown Lloyd James — public relations company.
• Bryanston Films — film production company, 1959—1963.
• BT Group — British multinational telecommunications company. Established in 1969, its headquarters is in London. Formerly known as Post Office Telecommunications, British Telecom, and then trading as BT, it has 7 divisions and 3 subsidiaries. In 2019 its revenue was £23.4 billion, with net income of £2.1 billion.
• Bulb Energy — energy company. Established in 2013, its headquarters is in London. It was formerly known as Regent Power, and Hanbury Energy.
• Bushey Studios — film studios, 1913–1985. Its headquarters was in Bushey, Hertfordshire.
• Business Stream — utility company. Established in 2006, its headquarters is in Edinburgh, Scotland. Its parent company is Scottish Water.
• Butlins — leisure company. Established in 1936, its headquarters is in Hemel Hempstead. It is owned by Bourne Leisure Holdings Ltd.

  C

• cahoot — financial services company. Established in 2000, its headquarters is in Belfast, Northern Ireland. Formerly part of Abbey National, it is now part of Santander UK.
• Cake Entertainment — TV series production and distribution company. Established in 2002, its headquarters is in London.
• Cambridge Water Company — utility company. Established in 1853, it is now part of South Staffordshire Water.
• Camelot Group — lottery company. Established in 1998, its headquarters is in Watford.
• Cannon Films — film production company. Established in 2014, its headquarters is in Lancaster, Lancashire.
• Caparo Vehicle Technologies — automotive and aerospace design and engineering and sports car production company. It was established in 2006.
• Capitol Films — film production and distribution company, 1989—2013.
• Cartoon Network Studios Europe animation studio. Established in 2007, its headquarters is in London. It is also known as Great Marlborough Productions, and formerly as Cartoon Network Development Studio Europe.
• Cater Allen — financial services company. Established in 1816, its headquarters is in London. Its parent company is Santander Group.
• Caterham Cars — automobile manufacturing company. Established in 1973 at Caterham, Surrey, its headquarters is in Crawley, Sussex. It has also traded as Seven Cars Limited.
• Caterham Springwater Company — utility company, 1852–1885. In 1885 it was merged with Kenley Water Company to form the East Surrey Water Company.
• Catford Studios film studio, 1914—1921. Located in Catford, London, it was also known as Windsor Studios.
• Celltech — biotechnology company, 1980-2004. Its headquarters was in Slough. In 1999 it was acquired by Chiroscience to briefly become Celltech Chiroscience. Celltech was acquired by UCB in 2004 to form UCB Celltech.
• Central Electricity Generating Board — state owned electricity generation and transmission company, 1957–2001. Its headquarters was in London.
• Centrica — British multinational energy supplier, and services company. Established in 1997, its headquarters is in Windsor, Berkshire. It was formed when British Gas plc was split into Centrica, BG Group, and Transco. Its trading names include British Gas, Scottish Gas, Bord Gais Energy, and Direct Energy. In 2019 its revenue was £26.8 billion, with net income of £1.1 billion.
• Century 21 Productions - television and film production company. See AP Films.
• Channel Four Films — film production company. See Film4 Productions.
• Charge Automotive — electric vehicle manufacturing company. See Arrival.
• Charles Urban Trading Company — film production company, 1903–1914/18. Its headquarters was in London.
• Charlotte Street Partners — communications company. Established in 2014, its headquarters is in Edinburgh.
• Chartered Bank of India, Australia and China — multinational British banking company, 1853–1969. Its headquarters was in London. In 1969 it was merged with Standard Bank Limited to form Standard Chartered Bank.
• Chelgate — public relations and public affairs company. Established in 1988, its headquarters is in London.
• Chelsea Waterworks Company — utility company, 1723–1902. Headquartered in London, it became part of the Metropolitan Water Board.
• Chelsham and Woldingham Water Company — utility company, 1884–1930. It became part of East Surrey Water Company.
• Chester Waterworks Company — utility company, 1838-1997. Headquartered in Chester, it was formerly known as the City of Chester Waterworks Company. In 1997 it became part of Dee Valley Water.
• Child & Co. — financial services company. Formerly a Goldsmiths, it was established in 1664 and is the oldest bank in the U.K. Headquartered in London, its parent company is the Royal Bank of Scotland Group.
• Children's Film Unit — film production company, 1981—2011.
• Chime Communications Limited — marketing services company. Established in 1989, its headquarters is in London.
• Chiroscience — biotechnology company, 1991-1999. In 1996 it was merged with Darwin Molecular Corporation. In 1999 it was acquired by Celltech who, in 2004, was acquired by UCB.
• Cholderton and District Water Company — utility company. It was established in 1904.
• Chorion — media, film and TV production and distribution company, 1998—2012.
• Churchill Mining — coal mining company. Established in 2005, its headquarters is in London.
• Cineguild Productions — film production company, 1944—1951.
• Cineworld — cinema chain company. Established in 1995, its headquarters is in London. In 2019 its revenue was £4.3 billion, with net income of £180.3 million.
• Cirkle — public relations company. Established in 1986, its headquarters is in Beaconsfield.
• CiteAb — biotechnology and life sciences data company. Established in 2014, its headquarters is in Bath, Somerset.
• Clearwater Features — film and TV production company, 1979—1990. Its headquarters is in London.
• Clerical Medical — financial services company. Established in 1824, its headquarters is in London. It was formerly known as the Medical, Clerical and General Life Assurance Society. Its parent company is Lloyds Banking Group.
• Clifton and Kersley Coal Company — coal mining company, 1861–1929. It became part of Manchester Collieries.
• Cloud Eight Films — film and television production company. Established in 2009, its headquarters is in London.
• Coalite Company — coke, petrol, and oils production company, 1917–2004. Established in London, its headquarters was in Bolsover. It was also known as The Coalite Chemicals Company.
• Codex Pictures — film production company, 2008—2013. Its headquarters was in London.
• Colne Valley Water — utility company, 1873–1994. In 1994 it was merged into Three Valleys Water.
• Comeleon - automotive, and mobile phone technology company. See Tanfield Group.
• Company of Mineral and Battery Works — metal, mining, and wire works company, 1565–c1750.
• Compass Group — British multinational contract food service, cleaning, and facilities management company. Established in 1941, its headquarters is in Chertsey. It was formerly known as Factory Canteens Limited, and Bateman Catering. In 2019 its revenue was £24.8 billion, with a net income of £1.1 billion.
• Computer Film Company — film visual effects company. Established in 1986, its headquarters is in London. It was merged with Framestore.
• Consolidated Gold Fields — gold mining company, 1887–1988. Headquartered in London, it was acquired by Hanson.
• ConvaTec — medical devices company. Established in 1978, its headquarters is in Reading, Berkshire. It was formerly a division of E.R. Squibb & Sons, Inc.
• Co-op Energy — energy company. Established in 2010, its headquarters is in Warwick. Its parent company is The Midcounties Co-operative.
• The Co-operative Bank plc — financial services company. Established in 1872, its headquarters is in Manchester. It was first formed as the Loan and Deposit Department of the Co-operative Wholesale Society. In 2009, it merged with the Britannia Building Society. In 2018, it had an operating income of £369 million. Its parent company is The Co-operative Bank Holdings Ltd.
• The Co-operative Banking Group — financial services company, 2002–2013. Its headquarters was in Manchester. Formerly known as Co-operative Financial Services, its subsidiaries were The Co-operative Bank and Co-op Insurance Services Ltd. Its parent company was The Co-operative Group.
• Co-operative Federal Trading Services — co-operative federation. Established in 2015, its headquarters is One Angel Square, Manchester. It is managed by The Co-operative Group.
• The Co-operative Group — consumers' co-operative. Established in 1844, its headquarters is One Angel Square, Manchester. First established as the Rochdale Society of Equitable Pioneers, in 1872 it became The Co-operative Wholesale Society. Its 2017 revenue was £9.5 billion, with a net income of £72 million.
• Co-op Insurance Services Ltd — insurance services company. Established in 1867, its headquarters is at CIS Tower, Manchester. Its parent company is The Co-operative Group.
• Co-op Legal Services — legal services company. Established in 2006, its headquarters is in Manchester. Its parent company is The Co-operative Group.
• Co-operative Retail Trading Group — co-operative federation, 1993–2015. Headquartered in Manchester, it was managed by The Co-operative Group.
• Cooper Car Company — automobile manufacturing company. Established in 1947, its headquarters is in Surbiton, Surrey.
• Copa90 — football media company. See Bigballs Media.
• Coral — gambling company. Established in 1926, its headquarters is in London.
• Corbyn, Stacey & Company — pharmaceuticals, and retail chemists company, 1726-1927. It was headquartered in London.
• Costa Coffee — British multinational coffee-house company. Established in 1971 in London, its headquarters is in Dunstable. It was acquired by Whitbread in 1995, then by Coca-Cola in 2019.
• Coutts & Company — financial services company. Established in 1692, its headquarters is in London. Its parent company is NatWest Holdings which is owned by the Royal Bank of Scotland Group. In 2018 its revenue was £681 million, with a net income of £268 million.
• Cove Energy plc — oil and gas exploration company, 2009–2012.Its headquarters is in London. In 2012 it was acquired by PTT Exploration and Production.
• Cow & Gate — dairy products, and babyfood company. Established in 1882, its headquarters is in Guildford, Surrey. It was formerly known as West Surrey Dairy, and West Surrey Central Dairy Company Limited. In 1959 it merged with United Dairies to form Unigate.
• Cricklewood Studios — film studios, 1920—1938. Located in London, it was also known as Stoll Film Studios.
• Crookes Healthcare — healthcare products and pharmaceuticals company. Established in 1918 in London, its headquarters is in Lenton, Nottingham. It was formerly known as Crookes Collosols, and The Crookes Laboratories. In 1960 it was acquired by Arthur Guinness Son and Company, then in 1971 it was acquired by Boots, and, in 2006, it was acquired by Reckitt Benckiser.
• Crosslé Car Company — racing car manufacturing company. Established in 1957, its headquarters is in Holywood, Northern Ireland.
• Crown Film Unit — film production company, 1940—1952. It was formerly the GPO Film Unit.
• Curzon Cinemas — cinema chain company. It was established in 1934.

  D

• Davrian Developments — automobile manufacturing company, 1967-1983. It was headquartered in Clapham, London, then Tregaron, Wales, and then Lampeter, Wales.
• Derwent Valley Water Board — state owned utility company, 1899–1974. It was succeeded by Severn Trent Water Authority.
• Diageo plc — British multinational alcoholic beverages company. Established in 1997, its headquarters is in Park Royal, London. Its brands include Smirnoff, Johnnie Walker, Baileys, and Guinness). It was formed from the merger of Guinness Brewery and Grand Metropolitan. In 2019 its revenue was £12.8 billion, with a net income of £3.3 billion.
• Dial-a-Phone — mobile phone retail company, 1995-2014. Its headquarters was in Newcastle-under-Lyme, Staffordshire.
• Digital Cybercherries Ltd — video games company. It was established in 2015.
• The Distillers Company — Scottish whiskey, pharmaceuticals, chemicals and plastics company, 1877-1986. Headquartered in Edinburgh, Scotland, it was acquired by Guinness in 1986 to form United Distillers.
• Dixons Carphone — British multinational electrical and telecommunications retail and services company. It was established in 2014 by the merger of Dixons Retail and Carphone Warehouse Group. Its headquarters was in London. In 2019 its revenue wes £10.4 billion, with net income of £320 million.
• DNA Bioscience — biotechnology company, 2003-2005.
• DNA Films — film production company. Its headquarters is in London.
• DNEG — film visual effects, animation, and stereo conversion company. Established in 1998, its headquarters is in London. It was formerly known as Double Negative.
• Dolomite Bio — biotechnology company. Established in 2016, its headquarters is in Royston, Hertfordshire. It is part of Blacktrace Holdings Ltd.
• Dorking Water Company — utility company, 1869–1959. Headquartered in Dorking, Surrey, it became part of East Surrey Water Company.
• Douglas Equipment — support vehicles manufacturing company. Established in 1947, its headquarters was in Cheltenham. It was formerly known as FL Douglas. It was later purchased by Textron.
• Dragon International Film Studios — film and TV studios. Established in 2006, it is located in Llanilid, Wales.
• Drum Films — film and TV production company. See Rogue Films.
• Drummonds Bank — financial services company. Established in 1717, its headquarters is in London. Its parent company is the Royal Bank of Scotland Group.
• DS Smith plc — international packaging company. Established in 1940, its headquarters is in London. In 2019 its revenue was £6.1 billion, with net income of £274 million.

  E

• Eagle-Lion Films — film production and distribution company, 1946—1950.
• Ealing Studios — film and television production, and studios company. Established in 1902 in London.
• East London Waterworks Company — utility company, 1806–1904. Headquartered in London, it became part of the Metropolitan Water Board.
• East Surrey Water Company — utility company, 1885–1996. It was formed by the merger of Caterham Springwater Company with Kenley Water Company. In 1996 it was merged with Sutton District Water to become Sutton and East Surrey Water.
• Eastern Electricity — energy company, 1948–1995. Headquartered in London, it was also known as Eastern Group. In 1995 it was acquired by Hanson plc.
• EasyGroup Holdings — brand licensing company. Established in 1998, its headquarters is in Kensington, London.
• EasyJet plc — airline group company. Established in 1995, its headquarters is at London Luton Airport, Luton, Bedfordshire. Its 2019 revenue was £6.3 billion, with net income of £349 million.
• EasyJet UK — airline company. Established in 2017, its headquarters is at London Luton Airport, Luton, Bedfordshire. Its parent company is Easy Jet plc.
• Ecosse Films - film and television production company, headquartered in London.
• Electricity North West — energy company. Established in 2007, its headquarters is in Warrington. It was formerly known as NORWEB. Its parent company is North West Electricity Networks.
• Elstree Film Studios Ltd — film and TV production company. Established in 1925 it is located at Borehamwood.
• EMI Films — film production and distribution company, 1969-1986. It also operated under the names: EMI-Elstree, MGM-EMI, EMI Film Distributors Ltd, Anglo-EMI Film Distributors Ltd, Thorn EMI Screen Entertainment, and Thorn EMI.
• Empire Cinemas Limited — cinema chain company, established in 2005.
• The Energy Group — energy company, 1990–1998. Headquartered in London, it was acquired by Texas Utilities.
• English China Clays — mining, stone quarries, building, and housing development company, 1919–1999. Headquartered in St Austell, Cornwall, it was acquired by Imetal.
• Enlightenment Productions — film production and distribution company, headquartered in London.
• Eon Productions — film production company. Established in 1961, its headquarters is in London.
• Eros Films — film production and distribution company, 1947—1961. Its headquarters was in London.
• Essex and Suffolk Water — utility company. Established in 1994, it was formed from the merger of Essex Water Company and Suffolk Water Company. Since 2000 it is part of Northumbrian Water.
• Everyman Cinemas — cinema chain company. Established in 1933, its headquarters is in London.
• Evraz — steel, and mining company. Established in 1992 in Moscow, its headquarters is in London.
• Extra Energy — utility company, 2014–2018. Its headquarters was in Birmingham.

  F

• Farboud Limited — automobile manufacturing company. See Arash Motor Company.
• Farmcare Trading Ltd — farming and wholesale company. Established in 1896, it was formerly part of the Co-operative Wholesale Society, and then The Co-operative Group. It was also known as The Co-operative Farms. In 2014 it was sold to the Wellcome Trust.
• Ferguson plc — building materials company. It was previously also a manufacturer of plumbing and heating products, and originally was a manufacturer of sheep shearing equipment. Established in 1887, its headquarters is in Winnersh Triangle. It was formerly known as Wolseley plc. In 2019 its revenue was $22 billion, with net income of $1.1 billion.
• Fifth Column Films — film production company, established in 2006.
• Film and Music Entertainment — film production company. Established in 2000, its headquarters is in London.
• Film Producers Guild — documentary film production and distribution company. Established in 1944, its headquarters is in London.
• Film Tank — film production company. Established in 2009, its headquarters is in Burnham-on-Sea.
• Film4 Productions — film production company. Its previous names were: Channel Four Films, FilmFour International, and FilmFour.
• Fine Arts Films — film and TV production company, established in 1955.
• Fingercuff Productions — film production company. Established in 2000, it is defunct.
• Finsbury — public relations company. Established in 1994, its headquarters is in London.
• Firmus Energy — energy company. Established circa 2005, its headquarters is in Antrim, Northern Ireland. It was formerly a subsidiary of Bord Gáis. In 2019 it was acquired by Equitix.
• First Choice Holidays Limited — travel company. Established in 1973, its headquarters is in Luton, Bedfordshire. It was formerly known as Owners Abroad. Its parent company is TUI AG.
• Fisons — British multinational pharmaceuticals, scientific instruments, and horticultural chemicals company, 1843-1995. Headquartered in Ipswich, Suffolk, it was formerly known as Edward Packard and Company Ltd, and Packard and James Fison Limited. It was acquired by Rhône-Poulenc in 1995.
• Fletcher, Burrows and Company — coal mining, and cotton mills company, 1872–1929. It became part of Manchester Collieries.
• Flow Energy — energy company. Established in 1998, its headquarters is in Ipswich. It was originally part of Flowgroup plc. In 2018 it was acquired by Co-op Energy.
• Focus Films — film production company. Established in 1982, its headquarters is in London.
• FoolishPeople — theatre company, film production, and book publishing company, established in 1989.
• For This Is Film — film production company. See Modern Life?.
• Force Protection Europe — military vehicle manufacturing company. Established in 2008, its headquarters is in Leamington Spa, Warwickshire. In 2011 it was purchased by General Dynamic.
• Foster Yeoman — construction, and rail haulage company, 1923-2006. Headquartered in Marston Bigot, Somerset, it was merged into Aggregate Industries.
• Framestore — film visual effects company. Established in 1986, its headquarters is in London. It was merged with Computer Film Company.
• Frank PR — public relations company. Established in 2000, its headquarters is in London.
• Free Seed Films — film production company, established in 2012.
• Freestream — automotive and aerospace engineering company. See Caparo Vehicle Technologies.
• Freud Communications — public relations company. Established in 1985, its headquarters is in London.
• Fulhold Pharma — pharmaceuticals company. Established in 2014, its headquarters is in Macclesfield, Cheshire. It was formerly known as Fulhold Ltd.
• Funeral Services Ltd — funeral services company. Headquartered in Manchester, its parent company is The Co-operative Group.
• Fuse Universal — learning solutions company. Established in 2008, its headquarters is in London.

  G

• G.B. Samuelson Productions — film production company, 1914—1933. It was also known as British-Super Films, and Napoleon Films.
• Gainsborough Pictures — film production company, 1924—1951. Established in London, it was also known as Gainsborough Studios.
• Gala Bingo — bingo company, established in 1991.
• Galpharm International — pharmaceuticals company. Established in 1982, its headquarters is in Dodworth, Barnsley. In 2008 it was acquired by Perrigo Group.
• Galvani Bioelectronics — bioelectronics R&D company. Established in 2016 by GlaxoSmithKline and Verily Life Sciences, its headquarters is in Stevenage, Hertfordshire.
• Gamesys — gambling company. Established in 2001, its headquarters is in London. In 2019 its revenue was £415 million, with net income of £8.5 million.
• Gas Light and Coke Company — energy company, 1812–1949. Headquartered in Westminster, London, it was also known as the Westminster Gas Light and Coke Company, and as Chartered Gas Light and Coke Company. In 1949 it was nationalised to become part of the North Thames Gas Board.
• Gate Studios — film studios company, 1924—early 1950s. It was situated in Borehamwood.
• Gateway Films — film production company. Established in 2009, its headquarters is in London.
• Gaumont British Picture Corporation — film company. Established in 1898, its headquarters was in London. In 1941 it was acquired by The Rank Organisation.
• GCM Resources — mining company. Established in 1998, its headquarters is in London. It was formerly known as Asia Energy plc, and as Global Coal Management.
• Gemfields — mining and jewellery company, established in 2007.
• Genus plc — biotechnology company. Established in 1933, its headquarters is in Basingstoke, Hampshire. It was formerly the Breeding and Production Division of the Milk Marketing Board. In 2019 its revenue was £488 million, with net income of £6.7 million.
• George Lister Engineering — automobile manufacturing company. See Lister Motor Company.
• George Wimpey — multinational construction company. Established in 1880, its headquarters is in London. In 2007 it was merged with Taylor Woodrow to form Taylor Wimpey.
• Gibbs and Canning Limited — terracotta manufacturing company, 1847–1950s. Its headquarters was in Glascote, Tamworth, Staffordshire.
• Ginetta Cars — automobile manufacturing company. Established in 1958, its headquarters is in Garforth, Leeds.
• GK Films — film and TV production company. Established in 1990, it was formerly known as Initial Entertainment Group.
• GlaxoSmithKline — British multinational pharmaceutical company. It was established in 2000 by a merger of Glaxo Wellcome and SmithKline Beecham. Headquartered in Brentford, London, it has one subsidiary. In 2019 its revenue was £33.7 billion, with net income of £4.6 billion.
• Glencore — British / Swiss multinational commodities trading, and mining company. Established in 1974, it was formerly known as Marc Rich + Co AG. Its headquarters is in Baar, Switzerland. In 2019 its revenue was $215 billion, with net income of $1.5 billion.
• Glory Film Co. — film and TV production company.
• Goldcrest Films — film company. Established in 1977, its headquarters is in London.
• Good Relations — public relations company, headquartered in London.
• GPO Film Unit film production company 1933—1940. It later became Crown Film Unit.
• Great Marlborough Productions — animation studio company. See Cartoon Network Studios Europe.
• Grain Media — film and TV production company. Established in 2006, its headquarters is in London.
• Grand Junction Waterworks Company — utility company, 1811–1903. Headquartered in London, it became part of the Metropolitan Water Board.
• Grand Metropolitan — leisure, manufacturing, and property conglomerate, 1934–1997. Headquartered in London, it was formerly known as Mount Royal Metropolitan Association, and Grand Metropolitan Hotels. In 1997 it was merged with Guinness Brewery to form Diageo plc.
• Grantura Engineering — see TVR.
• Grantura Plastics — see TVR.
• Great Productions — film production company, headquartered at Pinewood Studios.
• Great Yarmouth Waterworks Company — utility company, 1853–1962. In 1962 it merged with the Lowestoft Water Company to form the East Anglian Water Company.
• Greenpark Productions – documentary film production company. Established in 1938 in Polperro, its headquarters is in London.
• Greybull Capital — private investment company. Established in 2010, its headquarters is in Knightsbridge, London.
• Grinnall Specialist Cars — automobile and motorcycle manufacturing company, established in Bewdley, Worcestershire.
• Grosvenor Casinos — gambling company. Established in 1970, its headquarters is in Maidenhead. Its parent company is The Rank Group.
• Group Lotus - manufacturing company. See Lotus Cars.
• GTM Cars — kit car manufacturing company. Established in 1967, its headquarters is in Kingswinford, Dudley.
• GW Pharmaceuticals — biopharmaceutical medicines production company. Established in 1998, its headquarters is in Cambridge, Cambridgeshire.

  H

• Habitat — retail company. Established in 1964, its headquarters is in Milton Keynes, Buckinghamshire. Its parent company is Sainsbury's.
• Hafren Dyfrdwy — utility company. Established in 1997, its headquarters is in Packsaddle, Rhostyllen, Wrexham, Wales. It was formed from the merger of Wrexham Water plc and Chester Waterworks Company, and was formerly known as Dee Valley Water. Its parent company is Severn Trent.
• HAL Films — film production company, 1997—2012. Its headquarters was in London.
• Halifax — financial services company. It was formerly a building society, and estate agents. Established in 1853, its headquarters is in Halifax, West Yorkshire. It was formerly known as the Halifax Permanent Benefit Building and Investment Society, and HBOS. From 2007 it was subsumed by the Bank of Scotland but continued as a brand name.
• Halogen Communications — communications company. Established in 2002, its headquarters is in Edinburgh.
• Hammer & Tongs — film and video production company.
• Hammer Film Productions — film and television production company. Established in 1934, its headquarters is in London.
• HandMade Films — film production and distribution company. Established in 1978, its headquarters is in London.
• Hanson plc — building materials company. It was formerly a conglomerate including Imperial Tobacco, The Energy Group, Millennium Chemicals and others. It was also an asset trader, buying, restructuring and selling companies. Established in 1964, its headquarters is in London. It was formerly known as Hanson Trust. Its parent company is Heidelberg Cement.
• Harrison Ainslie — iron production, and mining company, 1893–1913. It became the Charcoal Iron Company.
• Hartlepool Water — utility company. Formerly, it was also a gas supplier. Established in 1846, its headquarters is in Huntingdon, Cambridgeshire. It was formerly known as Hartlepool Gas and Water Company. Since 1997 it is owned by Anglian Water.
• Hawk Films — film production company established in 1964.
• Haydock Collieries — coal mining company, 1899–1947. It became part of the National Coal Board.
• Headline Pictures — film and television production company. Established in 2005, its headquarters is in London.
• Healthcare at Home — pharmaceuticals supply company. Established in 1992, its headquarters is in Burton upon Trent, Staffordshire.
• Helkon SK — film production and distribution company. See Lionsgate UK.
• Hemdale Film Corporation — film production and distribution company, 1967—1995. Headquartered in London, it was later known as Hemdale Communications.
• Henleys Clothing — men and womenswear company, 1996-2011. Its headquarters was in Manchester.
• Henry's House — public relations company. Established in 1998, its headquarters is in London.
• Heyday Films — film production company. Established in 1996, its headquarters is in London.
• HICL Infrastructure Company — investment trust company. It was established in 2006.
• Hi-Gen Power — energy company. Established in 2009, it is now defunct. Its headquarters was in London.
• Hochschild Mining — silver and gold mining company. Established in 1911, its headquarters is in London. In 2019 its revenue was $755 million, with total income of $41 million.
• Horizon Discovery — biotechnology company. Established in 2005, its headquarters is in Cambridge.
• Hulton Colliery Company — coal mining company. Established in 1858, it is now defunct.
• Huntsworth — public relations company. Established in 1974, its headquarters is in London.
• Hurricane Films — film production company. Established in 2000, its headquarters is in Liverpool.

  I

• IAG Cargo — cargo airline company. Established in 2011, it was formed from the merger of British Airways World Cargo and Iberia Cargo. Its parent company is International Airlines Group.
• Ideal Film Company — film production and distribution company, 1911—1934. Its headquarters was in London.
• IG Group — financial services company. Established in 1974, its headquarters is in London. In 2019 its revenue was £488 million, with net income of £158 million.
• The Imaginarium — film production and performance capture company. Established in 2011, its headquarters is in London.
• Immunocore — biotechnology company . Established in 2008, its headquarters is in Oxford.
• Imperial Chemical Industries — chemicals manufacturing company, 1926—2008. Headquartered in London, in 2008 it was acquired by Akzo Nobel.
• Independent Film Distribution — film distribution company, 1950—1959.
• Initial Entertainment Group, film and television production company. See GK Films.
• International Airlines Group — Anglo-Spanish multinational airlines holding company. Established in 2011, its headquarters are in London and Madrid, Spain. It was formed from the merger of British Airways and Iberia. In 2019 its revenue was £25.5 billion, with a net income of £1.7 billion.
• International Game Technology — gaming company. Established in 1990, its headquarters is in London.
• Isle of Man Film — film production and finance company. Established in 1995, its headquarters is in the Isle of Man.
• ITC Entertainment - Television and film production and distribution company, 1954—1998. Its headquarters was in London.
• ITH Pharma — pharmaceuticals company. Established in 2008, its headquarters is in London.
• IXICO — biotechnology. Established in 2004, its headquarters is in London.

  J

• JAG Communications — retail company, 1989–2010. It was headquartered at Perranporth, Cornwall.
• James Hay Partnership — financial services company. Established in 1979, its headquarters is in Salisbury, Wiltshire. In 1990 it became part of Abbey National and then Santander UK before being sold to the IFG Group plc in 2010.
• James Woolley, Sons and Co. — manufacturing company, 1833—1962. Headquartered in Manchester, in 1962 it was acquired by British Drug Houses.
• JBA Motors — manufacturing company, 1982—2007. Established in Norwich, Norfolk, it was later headquartered in Standish, Greater Manchester. It was formerly known as JBA Engineering.
• JC Vickery — consumer goods company. Established in 1890, its headquarters is in London.
• John Bradley & Co — ironworks, mining, and freight railway company, 1800—1966. Its headquarters was in Stourbridge.
• John Brogden and Sons — railway contractors, mining, and iron smelting company, 1828—1880. Its headquarters was in London.