who has died of a heart attack aged 67, was an actor and stand-up comedian whose diverse work included one-man stage shows and screen portrayals of famous British politicians such as Harold Wilson and Edward Heath following his rise to fame in Whose Line Is It Anyway?He and Stephen Fry were regular panellists on the game show, improvising scenes suggested by the studio audience or presenter, Clive Anderson, during its single series on BBC radio in early 1988.When the programme switched to