cast
- Ian Bannen
- Dr. Del Shaw
- Norman Bird
- Brewer
- Jean Trend
- Dr. Fay Chantry
- George Sanders
- The Admiral
- Judy Geeson
- Victoria Brown
- John Paul
- Dr. Quist
- Paddy Ryan
- Grandfather Murray
- George Woodbridge
- Ferry Skipper
- Jerome Willis
- Lieutenant Commander Tavener
- Pam St. Clement
- Young Woman
- Katherine Parr
- Middle-Aged Woman
- Percy Herbert
- Hartwell
- Geoffrey Keen
- Sir Henry Leyton
- Simon Oates
- Dr. Ridge
- Reg Lever
- Sam
- James Mellor
- First Man
crew
- Peter Sasdy
- Director
- Tony Tenser
- Producer
- Clive Exton
- Screenwriter
- Kenneth Talbot
- Cinematographer
- John Scott
- Composer (Music Score)
- Keith Palmer
- Editor
- Colin Grimes
- Art Director
