paul darrow (born paul valentine birkby; 2 may 1941 – 3 june 2019) was an english actor. he was born in chessington, surrey. darrow was best known for his role as kerr avon in the bbc science fiction television series "blake's 7". he also guest starred twice on "doctor who", playing captain hawkins in the serial "doctor who and the silurians" and maylin tekker in the serial "timelash".