Matthew Bannister on Oleg Gordievsky, the KGB agent who defected to Britain and became a valued source of secret intelligence during the 1970s and 80s.

Renee Goddard, the actress and TV commissioner who fled Nazi persecution only to be interned in Britain.

Professor Richard Fortey, the palaeontologist who used his expertise in trilobites to tell stories about the origins of life on earth. Bill Bryson pays tribute.

Sofia Gubaidulina, the composer whose large scale religious works attracted criticism from the Soviet authorities.

Producer: Gareth Nelson-Davies

Archive: Friendly Enemy Aliens, BBC Radio 4, 1980; Kaleidoscope: Simon’s War, BBC Radio 4, 1984; Year of the Great Betrayal, BBC Radio 4, 1977; Reni and the Brownshirts, BBC Radio 4, 2002; Lisel, BBC Radio 4, 1955; Desert Island Discs : Oleg Gordievsky, Radio 4, 10/02/2008; In the Psychiatrist's Chair : Oleg Gordievsky, BBC Radio 4, 26/07/2015; BBC News, 15/12/1984; BBC News, 15/10/1990;