- Peter Blackmorescreenplay
- Denis Waldockadditional dialogue (as Dennis Waldock)
Rest of cast listed alphabetically
- Gerald Campion(uncredited)
- Howard Douglas(uncredited)
- Anthony Drake(uncredited)
- Joan Ingram(uncredited)
- Gerry Judge(uncredited)
- Tonie MacMillan(uncredited)
- Charles Paton(uncredited)
- Charles Penrose(uncredited)
- Philip Ray(uncredited)
- Thelma Rea(uncredited)
- Charles Rolfe(uncredited)
- Jean Sablon(voice) (uncredited)
- Frank Webster(uncredited)
- Betty E. Boxproducer
- Bryan Langleycinematographer (uncredited)
- Ivy Emmertonhair stylist (uncredited)
- Sydney Boxexecutive in charge of production
- Alf Keatingassistant director
- Hal Griversecond second assistant director (uncredited)
- Gerry O'Harafirst assistant director: second unit (uncredited)
- Ernest Archerdraughtsman (uncredited)
- Frank Whitedraughtsman (uncredited)
- B.C. Sewellsound director
- Mickey Jaysound camera operator (uncredited)
- Alfred Wilsondubbing editor (uncredited)
- Joan Stratfordstunt double for underwater scenes: Glynis Johns (uncredited)
- Dudley Lovellcamera operator
- James Bawdencamera operator: second unit (uncredited)
- Alan Gatwardclapper loader (uncredited)
- Cedric Hainestill photographer (uncredited)
- Peter Hennessydirector of photography: second unit (uncredited)
- Paul Wilsonassistant camera (uncredited)
- Egil S. Woxholtcamera operator: second unit (uncredited)
- Manny Yospafocus puller (uncredited)
- Yvonne Caffinwardrobe supervisor
- Geoffrey Botterillassistant editor (uncredited)
- Terry Poultonsecond assistant editor (uncredited)
- London Symphony Orchestramusic played by (as The London Symphony Orchestra)
- Muir Mathiesonconductor
- Pamela Carltoncontinuity: second unit (uncredited)
- Jo Harcourtcontinuity (uncredited)
- June Randallassistant continuity (uncredited)
- Dickie Bamberpage boy (uncredited)
- Betty Callaghanpublicist (uncredited)
- Jock Eastonswimming advisor (uncredited)
Crew believed to be complete
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