Defunct companies based in London

EMI Group Limited (formerly EMI Group plc until 2007; originally an initialism for Electric and Musical Industries, also referred to as EMI Records or simply EMI) was a British transnational conglomerate founded in March 1931 in London. At the time of its acquisition by Universal Music in 2012, it was the fourth largest business group and record label conglomerate in the music industry, and was one of the "Big Four" record companies (later the "Big Three"). Its labels included EMI Records, Parlophone, Virgin Records, and Capitol Records. Following EMI's breakup, most were acquired by Universal

2013–2018 British political consulting firm

thumb|Video of the Tongo Tongo ambush in [[Niger (October 2017).]] LiveLeak was a British video sharing website headquartered in London. It was founded on 31 October 2006, in part by the team behind Ogrish.com, a shock site that closed on the same day. LiveLeak aimed to freely host real footage of politics, war, and other world events and to encourage citizen journalism, although it became known for hosting videos with gore and extreme violence.

British consumer electronics company

defunct aircraft manufacturer

17th-century English trading company

British automobile manufacturer

Software development and licensing company

software company

Playfish was a short-lived developer of free-to-play social network games. Playfish was founded in 2007 by Kristian Segerstråle, Sebastien de Halleux, Sami Lababidi, and Shukri Shammas. It closed in 2013. Playfish in the past had tended to attract up to 55 million users a month, with over 37 million users coming from Facebook users.

UK manufacturer

company

former John Lennon / Paul McCartney music publishing company

video game company

English company

British book publisher

Livestation was a platform for distributing live television and radio broadcasts over a data network. It was originally developed by Skinkers Ltd. and is now an independent company called Livestation Ltd. The service was originally based on peer-to-peer technology acquired from Microsoft Research. Between mid-June 2013 and mid-July Livestation was unavailable to some subscribers due to technical issues.

defunct British computer hardware, computer software and computer services company

Amblimation was a British animation production company that served as the animation subsidiary of Amblin Entertainment. It was formed by Steven Spielberg in May 1989, following the success of Who Framed Roger Rabbit (1988), and after he parted ways with Don Bluth due to creative differences. It only produced three feature films: An American Tail: Fievel Goes West (1991), ''We're Back! A Dinosaur's Story (1993), and Balto'' (1995), all three of which feature music composed by James Horner and were distributed by Universal Pictures. The company's mascot, Fievel Mousekewitz, appears in its produc

British-American film studio (1975–1999)

right|thumb|An A4-size Gestetner Offset printing|offset-printing machine The Gestetner is a type of duplicating machine named after its inventor, David Gestetner (1854–1939). During the 20th century, the term Gestetner was used as a verb—as in Gestetnering. The Gestetner company established its base in London, filing its first patent in 1879. The business grew, remaining within the control of the Gestetner family, and acquiring other businesses. In 1995, the Gestetner company was acquired by the Ricoh Corporation of Japan.

video game developer

Invensys Limited was a multinational engineering and information technology company headquartered in London, United Kingdom. At its height, the company had offices in more than 50 countries and its products were sold in around 180 countries.

British company

company

former company

British retail company (1909–2009)

former British video game company

British video game publisher and developer during the 1980s

chartered company

English printing and publishing business

theatre company in London, United Kingdom, founded by Angelique Rockas

Railtrack was a group of companies that owned the track, signalling, tunnels, bridges, level crossings and all but a handful of the stations of the British railway system from 1994 until 2002. It was created as part of the privatisation of British Rail, listed on the London Stock Exchange, and was a constituent of the FTSE 100 Index. In 2002, after experiencing major financial difficulty, most of Railtrack's operations were transferred to the state-controlled non-profit company Network Rail. The remainder of Railtrack was renamed RT Group plc and eventually dissolved on 22 June 2010.

brand of British cyclecars made in London between 1910 and 1925

British manufacturer of telecommunications equipment

Securicor plc was one of the United Kingdom's largest security businesses. It was once a constituent of the FTSE 100 Index but merged with Group 4 Falck in 2004.

British-American film production company

leisure, manufacturing and property conglomerate

British-owned railway in Canada and New England

company

UK regional electricity supplier (1947-1993)

disgraced British public relations company

company

British photographic studio (active 1854-1922)

company

British investment management business