Sir Clive Sinclair's Biography

He launched his own company, Sinclair Radionics Ltd in 1958 (although the Mensa website and others say 1961 - so there is some debate). It produced calculators, personal computers and other electronic equipment.

Small was beautiful for Sir Clive Sinclair. He marketed the world's first pocket calculator, the world's first digital wristwatch and the first pocket TV.

In January 1980, Sir Clive Sinclair demonstrated his famous ZX80 at an exhibition in Wembley. A couple of years later the he ZX Spectrum was launched which proved, in its day, highly popular for playing computer games.

Sir Clive Sinclair was to be less successful with his C5 three-wheel car. It failed to impress the British public and was mainly used by companies who plastered them with posters and left them lying around the streets to advertise their products or stores.

Sir Clive Sinclair was Chairman of British Mensa from 1980-1997. An article in The Observer dated 19 October 1997 by John Arlidge reports on a schism and controversy within Mensa:

"Delegates bitterly criticised the outgoing chairman, inventor Sir Clive Sinclair, who forced Mr Gale [former Mensa Chief Executive] to quit.

"Members questioned why Sir Clive wanted a dawn raid on the organisation's offices in Wolverhampton and expelled Mr Gale over allegations that he had abused his position to run a private company ..."

Clive Sinclair was knighted in 1983 and is a keen poker player.

In 2008, one of Sir Clive Sinclair's main projects was producing foldable bicycles.

In 2010, Sir Clive and Angie Sinclair married, however, in 2017, The Telegraph reported that Sir Clive Sinclair had filed for divorce.

He died in September 2021, aged 81.