Sinclair Research Ltd is a British consumer electronics company founded by Sir Clive Sinclair in Cambridge. Originally incorporated in 1973 as Ablesdeal Ltd., it remained dormant until 1976, and did not adopt the name Sinclair Research until 1981.

In 1980, Clive Sinclair entered the home computer market with the ZX80 at £99.95, at the time the cheapest personal computer for sale in the UK. In 1982 the ZX Spectrum was released, later becoming Britain's best selling computer, competing aggressively against Commodore and Amstrad.

At the height of its success, and largely inspired by the Japanese Fifth Generation Computer programme, the company established the "MetaLab" research centre at Milton Hall (near Cambridge), in order to pursue artificial intelligence, wafer-scale integration, formal verification and other advanced projects. The combination of the failures of the Sinclair QL computer and the TV80 led to financial difficulties in 1985, and a year later Sinclair sold the rights to their computer products and brand name to Amstrad. Sinclair Research Ltd still exists today as a one man company, continuing to market Sir Clive Sinclair's newest inventions.

Sir Clive Marles Sinclair (born 30 July 1940) is an English entrepreneur and inventor, most commonly known for his work in consumer electronics in the late 1970s and early 1980s.

After spending several years as assistant editor of Practical Wireless and Instrument Practice, Sinclair founded Sinclair Radionics in 1961, where he produced the first slim-line electronic pocket calculator in 1972 (the Sinclair Executive). Sinclair later moved into the production of home computers and produced the Sinclair ZX80, the UK's first mass-market home computer for less than GB£100, and later, with Sinclair Research, the ZX81 and ZX Spectrum; the latter is widely recognised for its importance in the early days of the British home computer industry. Sinclair stated in 2010 that he does not use computers himself, using the telephone in preference to email.

Knighted in 1983, Sinclair formed Sinclair Vehicles and released the Sinclair C5, a battery electric vehicle that was a commercial failure. Since then Sinclair has concentrated on personal transport, including the A-bike, a folding bicycle for commuters that weighs 5.5 kilograms (12 lb) and folds down small enough to be carried on public transport.

Kevin Sinclair, MBE, (December 12, 1942 – December 23, 2007) was a journalist, author and passionate supporter of Hong Kong. He spent more than 50 years reporting the news and over 40 of those in Hong Kong. Born in New Zealand, Sinclair worked at various points in his career for the The Star, the Hong Kong Standard, and, for a long time, the South China Morning Post.

Kevin Sinclair was one of the first Western journalists to visit China, even before the "Bamboo Curtain" opened up. He reported from many remote provinces where he became known as the famous "mad journalist with the hole in his throat", due to a 1978 tracheostomy that robbed him of his natural voice and left him with the trademark hole through which he learned to speak again.

Sinclair is the author of some 24 books. His first, No Cure, No Pay: Salvage in the South China Seas was published by SCMP Books in 1981 and his most recent, Tell Me A Story: Forty Years of Newspapering in Hong Kong and China, also by SCMP Books, was published shortly before his death. 4 days before his death, he attended a book signing at Hong Kong's Foreign Correspondent's Club - an event even attended by Hong Kong Chief Executive Donald Tsang, one of Sinclair's many friends.

Scott Andrew Sinclair (born 25 March 1989) is an English footballer who plays for Premier League club Swansea City as a winger, having previously played for Bristol Rovers, Chelsea, Plymouth Argyle, Queens Park Rangers, Charlton Athletic, Crystal Palace, Birmingham City and Wigan Athletic. He represented England at youth level, from the under-17s to the under-21s.

Sinclair was born in Bath, Somerset and attended Ralph Allen School.

Sinclair joined Bristol Rovers at the age of nine. He became the second-youngest Bristol Rovers first-team debutant – at the age of 15 years 277 days – as a late substitute for Junior Agogo in the League Two game against Leyton Orient in December 2004.

Chelsea signed Sinclair in July 2005. A Football League tribunal set the compensation to be paid to Bristol Rovers at an initial £200,000, with increments up to a potential £750,000 to be paid if and when the player met various appearance milestones at club or international level. Chelsea would also have to pay Rovers 15% of the profit on any future sale.