Who directed this musical film produced by Kenneth Harper in which Melvyn Hayes appeared?
Melvyn Hayes: Melvyn Hayes (born Melvyn Hyams, 11 January 1935) is an English actor known for playing the effeminate Gunner (later Bombardier) "Gloria" Beaumont in the 1970s BBC sitcom "It Ain't Half Hot Mum", and the Cliff Richard hit musical films The Young Ones and Summer Holiday Summer Holiday (1963 film): Summer Holiday is a British CinemaScope and Technicolor musical film featuring singer Cliff Richard. Summer Holiday (1963 film):  The film was directed by Peter Yates (his debut), produced by Kenneth Harper.
Peter Yates