As anticipated in #57, Radio 4's 'Last Word' programme of 24th September 21 does have a spot about Sir Clive, with input from Jason Fitzpatrick from the Centre For Computing History and also from Chris Curry, the Sinclair colleague who went on to form Acorn.
https://www.bbc.co.uk/sounds/play/m000zv8y
The Clive 'spot' is from about 14:20 minutes in to 21:55 minutes in, but as usual the whole programme is worth listening to.