Anthony Asquith
Director
Bryan Langley
Special Effects
Frederick Wilson
Editor
George Pollock
Assistant Director
Benjamin Frankel
Original Music Composer
John Howell
Art Direction
Yvonne Axeworthy
Continuity
W.T. Partleton
Makeup Artist
Desmond Dickinson
Director of Photography
Arthur Alcott
Production Controller
H. A. R. Thomson
Camera Operator
Bill Warrington
Special Effects
Muir Mathieson
Conductor
Hugh Attwooll
Production Manager
Julie Harris
Costume Design
Albert Whitlock
Special Effects
Harry Miller
Sound Editor
Antony Darnborough
Producer
John Dennis
Sound Recordist
Gordon K. McCallum
Sound Recordist
Earl St. John
Executive Producer
Stanley Grant
Aerial Director of Photography
William Fairchild
Screenplay
John Pudney
Writer
James Donald
Michael Heathley
Phyllis Calvert
Lydia Heathley
Noel Willman
Dr. Dennis Bord
Herbert Lom
Dr. Alex Leon
Robert Beatty
Maj. Sam Seagram
Patric Doonan
Brian Jackson
Walter Fitzgerald
Sir Charles Craddock
Muriel Pavlow
Caroline Cartier
Maurice Denham
Prof. Carrington
Marjorie Fielding
Michael's Mother
Herbert Lomas
George Jackson
Geoffrey Denton
Fisher
Cyril Chamberlain
Inspector Carter
Hal Osmond
Agent Lawson
Caven Watson
Dr. Ferguson
Marianne Stone
Maisie
Stanley Maxted
Prof. Adams
Hartley Power
General Adams (uncredited)
Philip Ray
Sentry (uncredited)
Johnnie Schofield
Jim Barnes (uncredited)
John Warren
Ted (uncredited)
