- Writer:
- Fred Hoyle
- Writer/Producer:
- John Elliot
- Designer:
- Norman James
- Film Cameraman:
- Ken Westbury
- Film Editor:
- James Colina
- Fleming:
- Peter Halliday
- Madeleine Dawnay:
- Mary Morris
- Abu Zeki:
- David Saire
- Andromeda:
- Susan Hampshire
- Nurse:
- Heather Emmanuel
- Osborne:
- Noel Johnson
- Professor Neilson:
- Walter Gotell
- P.M.'s secretary:
- Frank Henderson
- Ratcliff:
- Norman Scace
- Intel agent:
- Michael Jacques
- Aircrew:
- Rifat Shenel
- Aircrew:
- Nasser Bin Yaqoob
- Yusel:
- Earl Cameron
- Lemka:
- Jean Robinson
- Corporal:
- Tony Cyrus
- Kaufman:
- John Hollis
- Mile Gamboule:
- Claude Farell
- Prime Minister:
- Maurice Hedley
- Burdett:
- David King
- Lemka's mother:
- Miki Iveria
