Defunct computer companies of the United Kingdom

Amstrad plc was a British consumer electronics company, founded in 1968 by Alan Sugar. During the 1980s, the company was known for its home computers beginning with the Amstrad CPC and later also the ZX Spectrum range after the Sinclair deal, which led it to have a substantial share of the home computer market in Britain. In the following decade it shifted focus towards communication technologies, and its main business during the 2000s was the manufacture of satellite television set-top boxes for Sky, which Amstrad had started in 1989 as the then sole supplier of the emerging Sky TV service.

British consumer electronics company

British computer company founded in 1978

former aerospace and defence company

former company

software company

Ferranti International PLC or simply Ferranti was a UK-based electrical engineering and equipment firm that operated for over a century, from 1885 until its bankruptcy in 1993. At its peak, Ferranti was a significant player in power grid systems, defence electronics, and computing, and was once a constituent of the FTSE 100 Index.

defunct British computer hardware, computer software and computer services company

Welsh company

British computer company

British microcomputer company

UK electronics company

telecommunications technology company

British technology company which produced Sinclair ZX Spectrum add-ons

British manufacturer of telecommunications equipment

Inmos International plc (trademark INMOS) and two operating subsidiaries, Inmos Limited (UK) and Inmos Corporation (US), was a British semiconductor company founded by Iann Barron, Richard Petritz, and Paul Schroeder in July 1978. Inmos Limited’s head office and design office were at Aztec West business park in Bristol, England.

known as Applied Computer Techniques until 1985, a computer services company

thumb|Memotech MTX512 computer

supercomputer