Gordon Zellaby
George Sanders
Anthea Zellaby
Barbara Shelley
Milly Hughes
Pamela Buck
Miss Ogle
Rosamund Greenwood
Mrs. Plumpton
Susan Richards
Vicar
Bernard Archard
P.C. Gobby
Peter Vaughan
General Leighton
John Phillips
Edgar Hargraves
Richard Vernon
Professor Smith
John Stuart
Dr. Carlisle
Keith Pyott
Coroner
Alexander Archdale
David Zellaby
Martin Stephens
Nurse
Sheila Robins
Pilot
Tom Bowman
Lieutenant
Anthony Harrison
WRAC Secretary
Diane Aubrey
Sapper
Gerald Paris
Child
June Cowell
Linda Bateson
John Kelly
Carla Cura
Lesley Scoble
Alan Bernard
Michael Gwynn
Mark Mileham
Roger Malik
Elizabeth Munden
Teri Scoble
Peter Preidel
Peter Taylor
Howard Knight
Village Child
Brian Smith
Janice Howley
Paul Norman
Dr. Willers
Laurence Naismith
Robert Marks
John Bush
Billy Lawrence
Keith older brother (uncredited)
Denis Gilmore
Harrington
Richard Warner
Mrs. Harrington
Jenny Laird
Evelyn Harrington
Sarah Long
James Pawle
Thomas Heathcote
Janet Pawle
Charlotte Mitchell
Third Assistant Director
Michael Stevenson
Screenplay
Stirling Silliphant
Novel
John Wyndham
Original Music Composer
Ron Goodwin
Editor
Gordon Hales
Ronald Kinnoch
Director
Wolf Rilla
Producer
Director of Photography
Geoffrey Faithfull
Art Direction
Ivan King
Hairstylist
Joan Johnstone
Production Manager
Denis Johnson
Visual Effects
Tom Howard
Makeup Artist
Eric Aylott