Valentine Dyall (7 May 1908-24 June 1985) played the Black Guardian in the Doctor Who stories The Armageddon Factor, Mawdryn Undead, Terminus and Enlightenment. Shortly before his death he also recorded the voice of Slarn for the radio play BBCR: Slipback, which was broadcast after his death.

External links Edit

• Valentine Dyall at the Internet Movie Database