 His many television roles included two appearances in another BBC science fiction series, "Doctor Who", playing Captain Hawkins in "Doctor Who and the Silurians" (1970) and Tekker in "Timelash" (1985).He was also the voice of "Jack" on independent radio stations JACKfm and Union JACK, whose lines included dry-witted comments pertaining to current events.Darrow was born Paul Valentine Birkby in Chessington, Surrey, on 2 May 1941.