Rattle of a Simple Man is a 1964 British comedy-drama film directed by Muriel Box and starring Diane Cilento, Harry H. Corbett and Michael Medwin, based on the 1963 play by Charles Dyer. The screenplay is about a naive man who becomes involved with a prostitute.

Plot

Percy Winthram is a 39-year-old socially inept, anxious virgin who pretends to be younger and travels by coach to London from Manchester with a group of friends to watch the FA Cup Final. The group have a night out in Soho and a £50 bet leads Percy to spend the evening with prostitute Cyrenne.