Cast(in credits order) verified as complete
...
Harold Pelham
...
Tony Alexander
...
Julia Anderson
...
Dr. Harris
...
James Pelham
...
Luigi
...
Frank Bellamy
...
Miss Bird
...
Eve Pelham
...
Sir Charles Freeman
...
Barton
...
Mason
...
Jameson
...
Morrison
...
Research Scientist
...
Sir Arthur Richardson
...
Ashton
...
Barber
...
Michael
...
Taxi Driver (uncredited)
Director
Original Music Composer
Director of Photography
Executive Producer
Screenplay
Producer
Editor
Associate Producer
Casting
Art Direction
Hairdresser
Makeup Artist
Costume Designer
Novel
...Harold Pelham
...Tony Alexander
...Julia Anderson
...Dr. Harris
...James Pelham
...Luigi
...Frank Bellamy
...Miss Bird
...Eve Pelham
...Sir Charles Freeman
...Barton
...Mason
...Jameson
...Morrison
...Research Scientist
...Sir Arthur Richardson
...Ashton