Gerald Thomas Director Frankie Howerd Francis Bigger Actor Sid James Charlie Roper Actor Charles Hawtrey Mr. Barron Actor Kenneth Williams Dr. Kenneth Tinkle Actor Jim Dale Dr. Jim Kilmore Actor Barbara Windsor Nurse Sandra May Actor Joan Sims Chloë Gibson Actor Bernard Bresslaw Ken Biddle Actor Hattie Jacques Matron Actor Anita Harris Nurse Clarke Actor Peter Butterworth Mr. Smith Actor June Jago Sister Hoggett Actor Derek Francis Sir Edmund Burke Actor Dandy Nichols Mrs. Roper Actor Peter Jones Chaplain Actor Deryck Guyler Mr. Hardcastle Actor Gwendolyn Watts Mrs. Barron Actor Dilys Laye Mavis Winkle Actor Peter Gilmore Henry Actor Harry Locke Sam Actor Marianne Stone Mother Actor Jean St. Clair Mrs. Smith Actor Valerie Van Ost Nurse Parkin Actor Julian Orchard Fred Actor Brian Wilde Man from Cox & Carter Actor Lucy Griffiths Miss Morris - Elderly Patient Actor Gertan Klauber Wash Orderly Actor Julian Holloway Simmons Actor Talbot Rothwell Screenwriter Peter Rogers Producer Alan Hume Cinematographer Alfred Roome Film Editor