Gerry Levy
Director
C. Wilfred Arnold
Art Direction
Michael St. Clair
Writer
Gerry Levy
Additional Writing
John Workman
Production Manager
Tony Tenser
Producer
Howard Lanning
Editor
John Workman
Assistant Director
Reg Tilsley
Original Music Composer
John Coquillon
Director of Photography
George Sanders
Gen. Armstrong
Maurice Evans
Dr. Matthews / Alien
Patrick Allen
Bob Megan
Neil Connery
Jim Radford
Robert Flemyng
W.C. Baldwin
Pamela Conway
Lorna
Allan Cuthbertson
Hindsmith
Michael Culver
Lt. Bailes
Sally Faulkner
Joanna
Shelagh Fraser
Mrs. Thatcher
Hilary Dwyer
Julie Slade
Dennis Chinnery
Control Officer
