Professor Jim Edwards
Jimmy Edwards
Oliver Pettigrew
Arthur Howard
Hamley
Donald Hewlett
Hackforth
Neil Wilson
Dinwiddie
Gordon Phillott
Roebuck
John Wilder
Pelbrook
Graham Tonbridge
Prince Hassid
Paul Castaldini
Swarthy Man
George Pastell
1st Man
George Selway
2nd Man
Richard Shaw
Police Officer
John Stuart
Lady Gore-Willoughby
Martita Hunt
Sid Biggs
Sydney Tafler
Garrick-Jones
Raymond Huntley
Bishop Wendover
Reginald Beckwith
Colbourne
Richard Briers
Matron
Vanda Hudson
Cecil Biggs
Melvyn Hayes
Wendover (as John Mitchell)
Mitch Mitchell
Director
Mario Zampi
Producer
Additional Dialogue
Frank Muir
Denis Norden
Writer
Michael Pertwee
Production Manager
Denis Johnson