 He was known in the late 1980s for playing Harwell Mincing in ITV's children's costume drama "Return of the Antelope".In later years, he has become known for his portrayal of Stephen Johnson in the BBC sitcom "As Time Goes By", alongside Judi Dench and Geoffrey Palmer.Chapman took on the role in Series 2 and appeared regularly until the show ended in 2002, returning for the Reunion Specials in 2005.