| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alan Hume | Crew | Camera | Director of Photography |
Albert Fennell | Crew | Production | Producer |
Bert Batt | Crew | Directing | Assistant Director |
Bill Rowe | Crew | Sound | Sound Recordist |
Brian Hodgson | Crew | Sound | Original Music Composer |
 Delia Derbyshire | Crew | Sound | Original Music Composer |
 Dudley Simpson | Crew | Sound | Original Music Composer |
Geoffrey Foot | Crew | Editing | Editor |
James H. Nicholson | Crew | Production | Executive Producer |
 John Hough | Crew | Directing | Director |
Les Hammond | Crew | Sound | Sound Recordist |
Linda DeVetta | Crew | Costume & Make-Up | Makeup Artist |
Norman T. Herman | Crew | Production | Producer |
 Richard Matheson | Crew | Writing | Novel, Screenplay |
Robert Jones | Crew | Art | Art Direction, Set Designer |
Sally Nicholl | Crew | Production | Casting |
 Susan Hart | Crew | Production | Executive Producer |
Tom Howard | Crew | Visual Effects | Visual Effects |
Tony White | Crew | Camera | Camera Operator |
Roy Whybrow | Crew | Crew | Special Effects |
Gladys Goldsmith | Crew | Directing | Continuity |
Peter Lennard | Crew | Sound | Sound Editor |
Ron Fry | Crew | Production | Production Manager |
Eileen Sullivan | Crew | Costume & Make-Up | Wardrobe Master |
Kenneth McCallum Tait | Crew | Art | Assistant Art Director |
Pat McDermott | Crew | Costume & Make-Up | Hairstylist |
 Clive Revill | Cast | Actor | Dr. Lionel Barrett |
 Gayle Hunnicutt | Cast | Actress | Ann Barrett |
 Michael Gough | Cast | Actor | Emeric Belasco (uncredited) |
 Pamela Franklin | Cast | Actress | Florence Tanner |
 Peter Bowles | Cast | Actor | Hanley |
 Roddy McDowall | Cast | Actor | Benjamin Franklin Fischer |
 Roland Culver | Cast | Actor | Mr. Rudolph Deutsch |
 Miles Jonn-Dalton | Cast | Royal Duke (uncredited) | |
| Person | Type | Job | Role(s) |
