This is a list of companies from the United Kingdom.
See lists of companies for lists of companies from other countries.
See FTSE 100 Index for the top 100 quoted companies.

• 3i
• Alliance & Leicester
• Alliance Unichem
• AMVESCAP
• Anglo American plc
• ARM Holdings
• AstraZeneca plc (Anglo-Swedish)
• ASDA
• Aviva
• BAA plc (formerly British Airports Authority)
• BAE Systems (merger of Marconi Electronic Systems and British Aerospace)
• Barclays Bank
• British_American_Tobacco
• BHP Billiton (Anglo-Australian)
• The BOC Group (formerly Brin Oxygen Company, British Oxygen Company)
• Boots the Chemist
• BP (formerly "British Petoleum" and "BP Amoco")
• Bradford & Bingley
• Brambles
• Brintons
• British Airways
• British Land
• BSkyB
• BT Group plc (formerly "British Telecommunications")
• Cable & Wireless
• Cadbury
• Cameron Balloons
• Carnival Plc (Anglo-American)
• Centrica
• Compass Group
• Corus (Anglo-Dutch)
• Daily Mail and General Trust plc
• Diageo
• Dixons Group
• Easyjet
• EMAP
• Focus (DIY) Ltd
• Gallagher
• GKN plc
• GlaxoSmithKline
• GUS
• HBOS
• Hilton Group (separate from the US Hilton company)
• HSBC
• Imperial Chemical Industries PLC
• Imperial Tobacco
• ITV
• Jardine Matheson
• John Taylor Bellfounders
• Johnson Matthey
• Kangol
• KESA Electricals
• Kingfisher
• Land Securities
• Laura Ashley
• Legal & General
• Lloyds TSB Group plc
• Lunn Poly
• Marconi plc (formerly The General Electric Company plc)
• Marks and Spencer plc
• Manganese Bronze
• MFI
• MG Rover Group
• mmO2
• Morrisons
• National Grid Transco
• Nationwide Building Society (a mutual)
• Northern Rock
• Orange
• Prudential
• Reed Elsevier (Anglo-Dutch)
• Remarkable
• Rio Tinto (Anglo-Australian)
• Rolls Royce
• Royal Bank of Scotland
• Royal & Sun Alliance
• Royal Mail
• Sage
• J Sainsbury plc
• Salmonbones Marketing
• Save a Cup Recycling Company
• Shell Oil (Anglo-Dutch)
• Shire Pharmaceuticals Group
• Smith & Nephew
• Smiths Industries
• Somerfield
• Standard Chartered
• Standard Life
• Swire
• Tate & Lyle
• Tesco
• Telewest Communications plc
• Tomkins
• Unilever (Anglo-Dutch)
• Uniross
• Vestey Group
• Virgin Atlantic Airways
• Vodafone
• W H Smith
• William Grant & Sons
• Wolesley
• Woolworths
• Xrefer

Former companies, including acquired and merged ones

• Acorn Computers Ltd, acquired by Olivetti
• AEI
• Ariel
• Austin
• BEA
• Blue Star Line
• British Aerospace
• British Caledonian airline
• East India Company
• British Leyland Motor Corporation
• British Motor Corporation
• British Motor Holdings
• British Rail
• British Thomson-Houston Company (BTH)
• BSA
• Daimler
• Dan-Air
• David Brown Limited
• Dowlais Iron Company
• E Gomme
• English Electric
• Great Western Railway
• Hawker Siddeley Company
• Lanchester
• Leyland Motors (commercial vehicles)
• London, Midland and Scottish Railway
• Marston's
• Metropolitan Vickers
• MG
• Morris Motor Company
• Napier & Son
• Nettlefolds Limited
• Nuffield Organisation
• Patent Nut and Bolt Company
• Qualiton Records
• Railtrack
• Riley
• Rover
• South Sea Company
• Standard
• Standard Triumph
• Triumph Motor Company
• Vanden Plas
• Wolseley

See also

• FTSE 100
• UK topics