Vladimir Bukovsky, Alison Prince, Keith Schellenberg, Robert Ponsonby

Pictured: Vladimir BukovskyMatthew Bannister onThe Russian dissident Vladimir Bukovsky, a long term opponent of the Soviet regime who revealed the use of psychiatric hospitals as political prisons.Alison Prince, the children's writer who scripted Trumpton.Keith Schellenberg, the eccentric millionaire who was a bobsleigh champion and keen powerboat racer. He bought the Scottish Isle of Eigg - and was accused of treating his tenants badly.Robert Ponsonby, the BBC Controller of Music who ran the Proms and faced a strike by musicians in the Corporation's orchestras.Interviewed guest: Alyona Kojevnikov Interviewed guest: Julia Eccleshare Interviewed guest: Ray Bulman Interviewed guest: Camille Dressler Interviewed guest: Professor David Hendy Interviewed guest: Peter Donohoe CBE Reader: Ian ConninghamProducer: Neil GeorgeArchive clips from: Vladimir Bukovsky interviewed by Bernard Levin, BBC Sound Archive 26/04/1980; Soviet Propaganda Film 1972, Periscope Film 17/08/2014; PM, Radio 4 04/01/1977; Watch with Mother: Joe and a Horse, BBC One 03/10/1966; Trumpton, BBC One, 03/01/1967; Spud by Alison Prince, Young Corgi, 07/08/2003; Jackanory, BBC One 1965; Radio Scotland News, 09/02/2006; Upfront, BBC Scotland 03/02/1994; Music Now, Radio 3 29/11/1974; Radio 3 continuity announcement, BBC Sound Archive 23/11/1978.