Michael Craig as Dr Richard Hare

Virginia Maskell as Dr Nicola Berrington

Leslie Phillips as Dr Tony Burke

James Robertson Justice as Sir Lancelot Spratt

Nicholas Phipps as Dr Clive Cardew

Carole Lesley as 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

Ronnie Stevens as Harold Green

Nicholas Parsons as Dr. Hinxman

Sheila Hancock as Librarian

Rosalind Knight as Doctor

Patrick Cargill as Car Salesman

Joan Hickson as Nurse

Moira Redmond as Sally Nightingale

Michael Ward as Dr. Flower

Angela Browne as Susan, Occupational Therapist

Avis Bunnage as Mrs. Jimp

Cyril Chamberlain as Bit Part

Bill Fraser as Police Sergeant

Warren Mitchell as Haystack Club Manager

John Junkin as Policeman

Marianne Stone as Hospital Sister

John Moulder-Brown as Boy with pot on his head

Peter Sallis as Lovestruck Patient

Norman Rossington as Strip Club Doorman

Meredith Edwards as Father

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)