Marvin Minsky, Margaret Forster, Peter Powell, Sir Brian Tovey, Joe Alaskey

Matthew Bannister on

Professor Marvin Minsky - the computer scientist who carried out pioneering work on artificial intelligence.

Margaret Forster who wrote novels like Georgy Girl and acclaimed biographies including a life of Daphne Du Maurier.

Peter Powell who invented the stunt kite and turned it into a global business, before it all came crashing down.

Sir Brian Tovey who was director of the Government Communications Head Quarters - GCHQ - when the government tried to introduce a ban on trade union membership.

And Joe Alaskey, the voice artist behind Daffy Duck and Bugs Bunny.