- Script:
- Stephen Grenfell.
- Serial edited and produced by:
- Neil Tuson
- Jackson:
- Philip Cunningham
- Sam Steed:
- John Sharp
- Professor Hilary Carr:
- Patrick Ross
- Janet Vicary:
- Anne Cullen
- Commander John Sturrock D.S.O., R.N.:
- Trevor Reid
- Chalmers G. Fletcher:
- Gerry Metcalfe
- Bluey Smith:
- Frank Foster
- Queen Lotus:
- Noel Hood
- Lunaris:
- Richard Hurndall
- Rear Admiral da Costa:
- Denis McCarthy
- Gomez, his aide:
- Michel Bazalgette
- Announcer:
- Hamilton Humphreys
