List of companies based in London

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File:Canary-wharf-one.jpg is a major business and financial centre and is home to some of the UK's tallest buildings.]]

This is a list of companies in London, England. London is the capital city of England and the United Kingdom. With an estimated 8,308,369 residents in 2012, London is the most populous region, urban zone and metropolitan area in the United Kingdom.According to the European Statistical Agency, London is the largest larger urban zone which uses conurbations and areas of high population as its definition. A ranking of population within municipal boundaries places London first. However, the University of Avignon in France claims that Paris is first and London second when including the whole urban area and hinterland, that is the outlying cities as well The city generates approximately 20 per cent of the UK's GDP;{{cite web|url=http://www.cityoflondon.gov.uk/NR/rdonlyres/2CAE66FB-2DD5-41A5-B916-8FFC37276059/0/BC_RS_lpuk_0511_FR.pdf |title=London's place in the UK economy, 2005–06 |format=PDF |publisher=City of London |accessdate=11 March 2008 |url-status=dead |archiveurl=https://web.archive.org/web/20060525075622/http://www.cityoflondon.gov.uk/NR/rdonlyres/2CAE66FB-2DD5-41A5-B916-8FFC37276059/0/BC_RS_lpuk_0511_FR.pdf |archivedate=25 May 2006 }} while the economy of the London metropolitan area—the largest in Europe—generates approximately 30 per cent of the UK's GDP.{{cite web|url=http://www.iaurif.org/en/doc/studies/cahiers/cahier_135/pdf/073-85.pdf|archiveurl=https://web.archive.org/web/20080624195153/http://www.iaurif.org/en/doc/studies/cahiers/cahier_135/pdf/073-85.pdf|archivedate=24 June 2008 |format=PDF|title=The Economic Positioning of Metropolitan Areas in North Western Europe |date=December 2002|publisher=The Institute for Urban Planning and Development of the Paris Île-de-France Region|accessdate=27 August 2008}}

London is one of the pre-eminent financial centres of the world and vies with New York City as the most important location for international finance.{{cite news|title=After the fall |newspaper=The Economist |date=29 November 2007 |url=http://www.economist.com/finance/displaystory.cfm?story_id=E1_TDNDRPTT |accessdate=15 May 2009 |archiveurl=https://web.archive.org/web/20121018154137/http://www.economist.com/finance/displaystory.cfm?story_id=E1_TDNDRPTT |archivedate=18 October 2012 |url-status=live }}{{Cite news|url=http://www.economist.com/specialreports/displaystory.cfm?story_id=9753240 |title=Financial Centres – Magnets for money |date=13 September 2007 |work=The Economist |accessdate=15 May 2009 |archiveurl=https://web.archive.org/web/20090805052952/http://www.economist.com/specialreports/displayStory.cfm?story_id=9753240 |archivedate=5 August 2009 |url-status=live }} Over half of the UK's top 100 listed companies (the FTSE 100) and over 100 of Europe's 500 largest companies have their headquarters in central London. Over 70 per cent of the FTSE 100 are located within London's metropolitan area, and 75 per cent of Fortune 500 companies have offices in London. London is home to 10 Global Fortune 500-ranked corporations{{cite web|url=http://www.londonstockexchange.com/en-gb/ |title=London Stock Exchange |year=2008 |publisher=London Stock Exchange plc. |accessdate=27 April 2008 |archiveurl=https://web.archive.org/web/20090609022757/http://www.londonstockexchange.com/en-gb/ |archivedate=9 June 2009 |url-status=dead }}

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