British television actor most well known for his role as the fourth Master on the long-running BBC science fiction series Doctor Who.
He had an early role as Detective Sergeant Hunter in the second series of It's Dark Outside and early film roles in Oh! What a Lovely War and The Land That Time Forgot.
He was offered the part of the Master by John Nathan-Turner after Turner saw his performance in The Pallisers.
He never married and was outspoken about how he was never a fan of marriage to begin with.
He played a Hong Kong policeman in the opening sequence for the Sean Connery starring Bond film You Only Live Twice.