Leslie Phillips as Dr Gaston Grimsdyke

James Robertson Justice as Sir Lancelot Spratt

Shirley Anne Field as Nurse Bancroft

John Fraser as Dr Miles Grimsdyke

Joan Sims as Matron Sweet

Arthur Haynes as Tarquin Wendover

Fenella Fielding as Tatiana Rubikov

Jeremy Lloyd as Lambert Symington

Noel Purcell as O'Malley

Robert Hutton as Rock Stewart

Eric Barker as Prof. Halfbeck

Terry Scott as Robert the hairdresser

Norman Vaughan as TV Commentator

Elizabeth Ercy as Jeannine Belmond

Alfie Bass as Fleming

Jean Benedetti as Man in French Movie

Anne Cunningham as Women's Ward Sister

Suzan Farmer as Nurse Holliday

Peter Gilmore as Len the Choreographer

Nicky Henson as Boutique Assistant

Robin Hunter as Sydney

Barry Justice as Beckwith

Bill Kerr as Digger

Harry Fowler as Grafton

Justine Lord as New Matron

Roddy Maude-Roxby as Tristram

Lionel Murton as Publicity Man

Dandy Nichols as Patient with Kidney Stones

Anthony Sharp as Dr. Dean Loftus

Ronnie Stevens as TV Producer

Jack Arrow as Porter (uncredited)

Ann Barrass as Patient (uncredited)

Alexandra Bastedo as Nurse at Party (uncredited)

Norman Chappell as Flower Delivery Man (uncredited)

Hugh Elton as Visitor (uncredited)

Mabel Etherington as Lady at Party (uncredited)

Catherine Feller as Catherine - Wife in French Movie (uncredited)

Danny Green as Ashby (uncredited)

Renee Heimer as Sister (uncredited)

John Junkin as Prison Warder (uncredited)

Harold Kasket as Husband in French Movie

Cheryl Kennedy as Nurse (uncredited)

Fred Machon as Visitor (uncredited)

André Maranne as Pierre in French Movie (uncredited)

Mary Maxfield as Sister (uncredited)

Ronald Rich as Student Doctor (uncredited)

Wendy Richard as Nurse with False Eyelashes (uncredited)

Jack Smethurst as Long-Haired Patient (uncredited)

Esme Smythe as Patient (uncredited)

John Tatham as Party Guest (uncredited)

Reg Thomason as Hospital Porter (uncredited)