Michael Craig as Dr. Richard Hare

Virginia Maskell as Dr. Nicola Barrington

Leslie Phillips as Dr. Tony Burke

James Robertson Justice as Sir Lancelot Spratt

Nicholas Phipps as Dr. Clive Cardew

Carole Lesley as Miss Kitten Strudwick

John Le Mesurier as Dr. Mincing

Joan Sims as Dawn

Reginald Beckwith as Wildewinde

Liz Fraser as Leonora

Ambrosine Phillpotts as Lady Spratt

Fenella Fielding as Mrs. Tadwich

Irene Handl as Professor MacRitchie

Esma Cannon as Rafia Woman (uncredited)

Ronnie Stevens as Mr. Harold Green

Nicholas Parsons as Dr. Hinxman

Sheila Hancock as Librarian (uncredited)

Rosalind Knight as Doctor (uncredited)

Patrick Cargill as Car Salesman (uncredited)

Joan Hickson as Nurse (uncredited)

Moira Redmond as Nurse Sally Nightingale

Michael Ward as Dr. Flower

Angela Browne as Susan (uncredited)

Avis Bunnage as Mrs. Mimp (uncredited)

Cyril Chamberlain as Shower Steward (uncredited)

Bill Fraser as Police Sergeant (uncredited)

Warren Mitchell as Haystack Club Manager (uncredited)

John Junkin as Policeman (uncredited)

Marianne Stone as Hospital Sister (uncredited)

John Moulder-Brown as Mimps Boy (uncredited)

Peter Sallis as Mr. Luke (uncredited)

Norman Rossington as Haystack Club Doorman (uncredited)

Meredith Edwards as Parker

Sheila Aza as Visitor (uncredited)

John Blythe as Haystack Club Barman (uncredited)

Fay Bura as Dr. Harvey (uncredited)

Donald Churchill as Doctor (uncredited)

Roland Curram as Student Doctor (uncredited)

Jack Dearlove as Waiter (uncredited)

Sally Douglas as Dancer in Strip Show (uncredited)

Eve Eden as Dancer in Strip Show (uncredited)

Fred Griffiths as Ambulance Driver (uncredited)

Douglas Ives as Furniture Remover (uncredited)

Billy John as Doctor at Lecture (uncredited)

Charles Lloyd Pack as Hospital Dean (uncredited)

Derek Prentice as Doctor in Lecture (uncredited)

Robin Ray as Doctor (uncredited)

John Tatham as Haystack Club Patron (uncredited)

Jimmy Thompson as Doctor (uncredited)

Martin Wyldeck as Police Officer (uncredited)

Irene Barrie as (uncredited)

Paul Beradi as Haystack Club Patron (uncredited)

Derek Blomfield as George (uncredited)

Ernest Blyth as Haystack Club Patron (uncredited)

Dennis Carnell as Party Guest (uncredited)

Dan Darnelli as Doctor at Lecture (uncredited)

Richard Duke as Junior Doctor (uncredited)

Norman Fisher as Doctor at Lecture (uncredited)

Philip Gilbert as Doctor (uncredited)

Arthur Goodman as Party Guest (uncredited)

Claire Gordon as Job Applicant (uncredited)

Pat Hagan as Haystack Club Patron (uncredited)

Victor Harrington as Haystack Club Patron (uncredited)

Ruth Harrison as Party Guest (uncredited)

Jack Hetherington as Doctor at Lecture (uncredited)

Arthur Howell as Constable (uncredited)

Tony Jason as Party Guest (uncredited)

Anthony Lang as Doctor at Lecture (uncredited)

Dan Lester as Doctor at Lecture (uncredited)

Leonard Llewellyn as Doctor at Lecture (uncredited)

Lola Morice as Sister (uncredited)

Marigold Russell as Nurse (uncredited)

Pat Ryan as Passerby (uncredited)

Arnold Schulkes as Restaurant Patron (uncredited)

Miles Silverton as Doctor at Lecture (uncredited)

George Spence as Patient (uncredited)

Philip Stewart as Doctor at Lecture (uncredited)

Fred Stroud as Cold Patient (uncredited)

Reg Thomason as Pub Patron (uncredited)

Laura Thurlow as Stripper (uncredited)

Martin Voss as Patient (uncredited)