- Writer:
- Gilbert Hackforth-Jones
- Writer:
- Margaret Hackforth-Jones
- Producer:
- Audrey Cameron
- Ian Bawley:
- Richard Hurndall
- Eileen, his wife:
- Gudrun Ure
- Captain Henry Turton, D.S.O., R.N:
- Lee Fox
- Lt.-Cdr. Faversham:
- John Pullen
- Rear-Admiral Dryson, Flg. Off. Submarines:
- Austin Trevor
- Lt.-Cdr. John Winter, D.S.C., R.N:
- John Westbrook
- Peggy, his wife:
- Nicolette Bernard
- C.P.O. Archie Manton (Coxswain):
- David March
- A.B. 'Bolster' Jones:
- John Hollis
- Lieut. Bruce Hardy, R.N.:
- John Graham
- Sub-Lieut. Dicky Johnson:
- Charles Hodgson
- Lieut. Perkins, Chief Engineer:
- Michael Spice
- Chief Eng.-Room Artificer Bert Hooker:
- Kenneth Hyde
- Mrs Rose Weldon, Naval Welfare Officer:
- Marjorie Westbury
- R.C.O. Stephen Benwall:
- David Spenser
- Pauline, his Wife:
- Peggy Butt
- Mrs Bolitho:
- Nicolette Bernard
- Tom Hooker:
- Graham Aza
- Jerry Hooker:
- Howard Knight
- Mrs Hooker:
- Mary O'Farrell
- Penelope Dryson:
- Dorit Welles
- Bobby, a pressman:
- John Hollis
- Peter Porter:
- Andrew Irvine
- Capt Byng, R.N.:
- Will Leighton
- Mrs Cuttle:
- Elizabeth Morgan
- Other parts:
- Sheila Cooklin
- Other parts:
- Michael Deacon
- Other parts:
- Jonathan Scott
