Directed by
| John Boulting | ||
| Roy Boulting | ||
Writing Credits
| Nigel Balchin | ... | (novel) |
| Nigel Balchin | ... | (screenplay) |
| Jeffrey Dell | ... | (additional scenes) & |
| Roy Boulting | ... | (additional scenes) |
| Jeffrey Dell | ... | (additional dialogue) & |
| Roy Boulting | ... | (additional dialogue) |
Cast (in credits order) verified as complete
| Tony Britton | ... | Bob Marriott | |
| Virginia Maskell | ... | Lucy Byrne | |
| Peter Cushing | ... | Professor Sewell | |
| Ian Bannen | ... | Alan Andrews | |
| Raymond Huntley | ... | Sir George Gatling | |
| Thorley Walters | ... | Mr. Prince | |
| Donald Pleasence | ... | Brown | |
| Spike Milligan | ... | Arthur | |
| Kenneth Griffith | ... | Dr. Shole | |
| Robert Bruce | ... | Levers | |
| Anthony Booth | ... | Parkin | |
| Basil Dignam | ... | Dr. Childs | |
| Brian Oulton | ... | Director | |
| Sam Kydd | ... | Slater | |
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John Payne | ... | Iverson |
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Margaret Lacey | ... | Mr. Prince's Secretary |
| Bruce Wightman | ... | Phil - the Barman | |
| Ian Wilson | ... | Pin-Table Man | |
| Murray Melvin | ... | Teddy Boy | |
| Geoffrey Bayldon | ... | Rosson | |
| Andre Charisse | ... | Heller (as Andre Charise) | |
| Rest of cast listed alphabetically: | |||
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Hyma Beckley | ... | Scientist (uncredited) |
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Charles Gilliard | ... | Man at Ceremony (uncredited) |
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Philip Stewart | ... | Man in Cinema (uncredited) |
| Reg Thomason | ... | Man in Pub (uncredited) | |
Produced by
| John Boulting | ... | producer |
| Roy Boulting | ... | producer |
Cinematography by
| Mutz Greenbaum | ... | director of photography (as Max Greene) |
Editing by
| John Jympson | ||
Art Direction by
| Albert Witherick | ||
Set Decoration by
| Peter James | ... | (uncredited) |
Makeup Department
| Anne Box | ... | hairdresser |
| Freddie Williamson | ... | makeup artist (as Freddy Williamson) |
Production Management
| Philip Shipway | ... | production manager |
Second Unit Director or Assistant Director
| Basil Rayburn | ... | assistant director (as Basil Rabin) |
| Henry Emery | ... | third assistant director (uncredited) |
| Julian Mackintosh | ... | second assistant director (uncredited) |
Art Department
| Alan Evans | ... | scenic artist |
| Terry Addison | ... | draughtsman (uncredited) |
| Percy Godbold | ... | production buyer (uncredited) |
Sound Department
| George Stephenson | ... | sound mixer |
| Jack Davies | ... | boom operator (uncredited) |
| Ernest Webb | ... | sound camera operator (uncredited) |
Camera and Electrical Department
| Peter Allwork | ... | camera operator |
| Gerry Anstiss | ... | assistant camera |
| Robin Browne | ... | clapper loader (uncredited) |
| Laurie Ridley | ... | still photographer (uncredited) |
| Jack Roche | ... | grip (uncredited) |
| Jack Sullivan | ... | chief electrician (uncredited) |
Costume and Wardrobe Department
| Maude Churchill | ... | wardrobe mistress (uncredited) |
Editorial Department
| Ron Pope | ... | second assistant editor (uncredited) |
| Jeremy Saunders | ... | first assistant editor (uncredited) |
Music Department
| Frédéric Chopin | ... | (as Chopin) |
| Aleksandr Skryabin | ... | (as Scriabin) |
| John Wilkes | ... | music arranger: music of Chopin and Scriabin / musician: piano / composer: additional music (uncredited) |
Script and Continuity Department
| Beryl Booth | ... | continuity (uncredited) |
Additional Crew
| Joan Parcell | ... | production secretary (uncredited) |