Hardy Krüger
Wolf Hauser
Sylvia Syms
Ann Wainwright
Ronald Lewis
Hugo Foster
Eric Barker
Aubrey Murdock
Miles Malleson
Dr. Butson
Newton Blick
Morgan
Jeremy Burnham
Adrian Baskerville
Peter Myers
Jeremy
Philip Gilbert
Conrad Lewis
Charles Kay
Tom Kay
John Richardson
Robin
Gillian Vaughan
Virginia Newton
Sandra Francis
Lois
Barbara Steele
Fiona
Catherine Feller
Helene
Monica Stevenson
Vanessa
Pamela Barreaux
Bijou
Beatrice Varley
Mrs. Upcott
Hugh Morton
Lecturer
Everley Gregg
Lady Don
Ronnie Stevens
Shop Assistant
David Buck
Student at Lecture (uncredited)
Peter Cook
Pedestrian in Street (uncredited)
Roger Hammond
Undergraduate pushing the car (uncredited)
Oliver Johnston
Professor Gadsworth (uncredited)
Geremy Phillips
Student (uncredited)
Frank Williams
Police Constable Hesketh
Crew
Geoffrey Unsworth
Director of Photography
Edward Carrick
Art Direction
Douglas Peirce
Production Manager
Geoffrey Haine
Assistant Director
Jack Atcheler
Camera Operator
Joan Davis
Continuity
Anthony Mendleson
Costume Design
Trevor Crole-Rees
Makeup Artist
Maude Onslow
Hairstylist
Frank Goulding
Sound Editor
Len Page
Sound Recordist
Terence Cotter
Sound Recordist
Ken Cameron
Sound Re-Recording Mixer
Vivian Cox
Producer
Hubert Clifford
Original Music Composer
Leslie Bricusse
Writer
Frederic Raphael
Writer
Wolf Rilla
Director
Eric Boyd-Perkins
Editor