A Canadian actor and voice actor, probably best known as the voice of Scott Tracy in Thunderbirds. He has mostly performed in supporting roles, frequently in films and television series filmed in the UK, having relocated to England in the late 1950s. His appearances include roles in such widely-known films as Dr. Strangelove (1964), Rollerball (1975), The Spy Who Loved Me (1977), Gandhi (1982), Out of Africa (1985) and Crusoe (1989). More recently he has appeared in Spy Game (2001), and Batman Begins (2005).

In the earlier years of his career, there were several uncredited performances, among others for films such as You Only Live Twice (1967), Diamonds Are Forever (1971), Star Wars (1977) and Superman II (1980). He has also appeared in Doctor Who and Coronation Street.