Trailer
Images
 | Simon Oates as Dr. Joe Burke |
 | Zena Marshall as Sandy Lund |
 | Charles Hawtrey as Joshua Yellowlees |
 | Patricia Hayes as Mrs. Jones |
 | Stanley Meadows as Ben Keller |
 | Max Adrian as Dr. Henry Shore |
 | Frank Barry as Burke (as a child) |
| Leonard Cracknell as Nick |
 | André Maranne as Gendarme |
 | Frank Forsyth as Uncle |
| Robert Jewell as Robot Operator |
 | Richard Carpenter as Danny |
| Graham Corrit |
| Stephen Follett |
| Eric Kent |
| Nigel Kingsley |
| Writing | |
| Murray Leinster | Novel |
| John Brunner | Writer |
Directing | |
| Montgomery Tully | Director |
Camera | |
| Geoffrey Faithfull | Director of Photography |
Production | |
| Max Rosenberg | Producer |
| Milton Subotsky | Producer |
Art | |
| Scott Slimon | Art Direction |
| William Constable | Production Design |
Costume & Make-Up | |
| Olive Mills | Hairstylist |
Sound | |
| Stanley Smith | Sound Editor |
Costume & Make-Up | |
| Dorrie Hamilton | Makeup Artist |
Camera | |
| Len Harris | Camera Operator |
Directing | |
| Tom Walls Jr. | Assistant Director |
Editing | |
| Peter Musgrave | Editor |
Sound | |
| Laurie Clarkson | Sound Recordist |
| Elisabeth Lutyens | Original Music Composer |
