The archive footage used just before Chris is presenting the Acorn Atom to the press in 1980, shows a Commodore 1701 monitor, 2 Amstrad CPC464s and glimpse of a BBC Micro, all of which did not exist in the year where the scene takes place.
Towards the end, Sir Clive is driving in his C5 as two trucks pass. The truck with the Compaq logo on the side is shown to have a modern HP logo on its rear. HP and Compaq did not merge until 2002.
Clive Sinclair receives a cheque for 10,000 pounds dated 1st October 1979. Later on, a news-board pronounces Margaret Thatcher as having won the election; which happened in May of the same year.
Clive Sinclair: Games! Games! Everywhere I go games! This is what my lifetime of achievement has been reduced to! Clive Sinclair the man who brought you Jet Set fucking Willy!