After leaving RADA, Clegg joined the
Watford Palace Theatre Company, where he met
Jimmy Perry, who would go on to cast Clegg in the role for which he is best known. It was there that he also met many of his future co-stars, including
Michael Knowles,
Donald Hewlett and
Mavis Pugh (whom he married in 1959). In 1973 he was cast in the
BBC sitcom ''
It Ain't Half Hot Mum'' as Gunner Graham, the concert party's pianist. The show ran for eight series and Clegg appeared in all 56 episodes. Despite playing the pianist in the concert party of the show, John could not actually play piano In 1982, Clegg made a return to the theatre, co-producing with his wife a one-man show about
Rudyard Kipling which achieved success at the
Edinburgh Festival Fringe, winning a Fringe Award. His last role was in the 2006 film
Tommy the Kid, as a police officer but in 2009 appeared in the ''Dad's Army'' podcast. == Personal life ==