- Writer/Producer:
- Rex Tucker
- Naval Adviser:
- Lieut.-Cmdr. George Naish, R.N.V.R.
- Make-up supervised by:
- Christine Hillcoat
- Costumes supervised by:
- Olive Harris
- Film Cameraman:
- Leonard Newson
- Film Editor:
- Ron de Mattos
- Designer:
- John Cooper
- Admiral Lord Nelson:
- Hugh David
- Henry Lancaster, the man:
- Laidman Browne
- Vicar of Merton:
- Maurice Colbourne
- Lady Hamilton:
- Margot Lister
- Henry Lancaster, the boy:
- Nigel Lambert
- Sophia Duff:
- Brenda Dunrich
- Norwich Duff:
- Nicolas Chagrin
- Captain Hardy:
- David Langton
- Lieutenant Pasco:
- Bernard Brown
- Captain Dun:
- Alan MacNaughtan
- Beatty:
- Thomas Heathcote
- Captain Blackwood:
- Bernard Horsfall
- Viscount Castlereagh:
- Robert Lankesheer
- Mr. Canning:
- Peter Hutton
- Mr. Pitt:
- Preston Lockwood
- The Chaplain:
- Alban Blakelock
- Other parts played by:
- Peter Furnell
- Other parts played by:
- Robin Ranson
- Other parts played by:
- Meadows White
- Other parts played by:
- Bernard Fox
- Other parts played by:
- Leslie Smith
- Other parts played by:
- Victor Baring
- Other parts played by:
- Christopher Page
- Other parts played by:
- Douglas Blackwell
- Other parts played by:
- Tom Bowman
- Other parts played by:
- Leonard Sharp
- Other parts played by:
- Peter Welch
- Other parts played by:
- Peter Doughty
- Other parts played by:
- David Ludman
