Michael Sydney Knowles is a British actor and scriptwriter who is best known for his roles in BBC sitcoms written by Jimmy Perry and David Croft.

James Perry was an English scriptwriter and actor. He devised and co-wrote the BBC sitcoms Dad's Army (1968–1977), It Ain't Half Hot Mum (1974–1981), Hi-De-Hi (1980–1988) and You Rang, M'Lord? (1988–1993), all with David Croft. Perry co-wrote the theme tune of Dad's Army, "Who Do You Think You Are Kidding, Mr. Hitler?" along with Derek Taverner, for which Perry received an Ivor Novello Award from the British Academy of Songwriters, Composers and Authors in 1971.