| Person | Type | Job | Role(s) |
|---|---|---|---|
 Amelia Reynolds Long | Crew | Writing | Story |
Anna Duse | Crew | Costume & Make-Up | Costume Supervisor |
Arthur Crabtree | Crew | Directing | Director |
Barbara Barnard | Crew | Costume & Make-Up | Hairstylist |
Buxton Orr | Crew | Sound | Original Music Composer |
Charles F. Vetter | Crew | Production | Executive Producer |
 Douglas Hickox | Crew | Directing | Assistant Director |
Herbert J. Leder | Crew | Writing | Screenplay |
Jim Hydes | Crew | Costume & Make-Up | Makeup Artist |
John Croydon | Crew | Production | Producer |
John Elphick | Crew | Art | Set Designer |
Karl-Ludwig Ruppel | Crew | Crew | Special Effects |
Lionel Banes | Crew | Camera | Director of Photography |
Peter T. Davies | Crew | Sound | Sound Recordist |
Ronald Kinnoch | Crew | Production | Co-Producer, Production Manager |
Flo Nordhoff | Crew | Crew | Special Effects |
Richard Gordon | Crew | Production | Executive Producer |
Leo Rogers | Crew | Camera | Camera Operator |
Terry Poulton | Crew | Sound | Sound Editor |
Richard Q. McNaughton | Crew | Editing | Editor |
Martin Curtis | Crew | Camera | Second Unit Director of Photography |
Frederic Lewis | Crew | Sound | Conductor |
Peter Neilson | Crew | Crew | Special Effects |
Hazel Swift | Crew | Directing | Continuity |
Alexander Archdale | Cast | Actor | Minister (uncredited) |
E. Kerrigan Prescott | Cast | Actor | Atomic Engineer |
Gil Winfield | Cast | Actor | Dr. Warren |
James Dyrenforth | Cast | Actor | Mayor Hawkins |
 Kim Parker | Cast | Actress | Barbara Griselle |
 Kynaston Reeves | Cast | Actor | Prof. R. E. Walgate |
Lala Lloyd | Cast | Actress | Amelia Adams |
Launce Maraschal | Cast | Actor | Melville |
 Marshall Thompson | Cast | Actor | Major Jeff Cummings |
Meadows White | Cast | Actor | Ben Adams |
 Michael Balfour | Cast | Actor | Sgt. Kasper |
 Peter Madden | Cast | Actor | Dr. Bradley |
Shane Cordell | Cast | Actress | Nurse |
 Stanley Maxted | Cast | Actor | Col. Butler |
 Terry Kilburn | Cast | Actor | Capt. Al Chester |
 Robert MacKenzie | Cast | Actor | Const. Howard Gibbons |
 Victor Harrington | Cast | Actor | Villager (uncredited) |
 Tom Watson | Cast | Actor | Technical Sergeant (uncredited) |
Jack Hetherington | Cast | Sergeant in Office (uncredited) | |
Victor Hagan | Cast | Villager (uncredited) | |
Sheldon Allan | Cast | Sentry (uncredited) | |
Richard Neller | Cast | Townsman (uncredited) | |
| Person | Type | Job | Role(s) |
