Sinclair Research Limited

Established 1973 by Sir Clive Sinclair (b 1940) as Sinclair Computers, but company dormant until 1976; renamed Sinclair Research Limited in 1981; ZX81 computer launched 1981; 1986 computer range sold to Amstrad, Sinclair Research reduced to an R & D and holding company, with Sir Clive Sinclair as sole employee (2009).