Born in Dagenham, Essex, he studied music at Oxford. In 1960, he joined fellow Oxbridge graduates in Beyond the Fringe at the Edinburgh Festival, then in London and on Broadway. He formed a satirical comedy partnership with Peter Cook that flourished on television in Not Only … But Also (1965-71), on records as "Derek and Clive", and in such films as The Wrong Box (1966) and Bedazzled (1967). He eventually went his own way and enjoyed belated Hollywood success as the middle-aged hero of comedies such as "10" (1979) and Arthur (1980). An acclaimed pianist and jazz performer, he also composed the music score for a number of films and performed with some of the world's leading classical orchestras. On television, he presented the series Concerto! (1993). His career was curtailed in later years after he was diagnosed with the degenerative disease progressive supranuclear palsy. He was awarded the CBE in 2001.