- Barry Letts - Apsley Cherry-Garrard
- Clive Morton - Herbert Ponting F.R.P.S.
- Anne Firth - Oriana Wilson
- Diana Churchill - Kathleen Scott
- Dennis Vance - Charles S. Wright
- Larry Burns - P.O. P. Keohane R.N.
- Edward Lisak - Dimitri
- Melville Crawford - Cecil Meares
- Christopher Lee - Bernard Day
- John Owers - F. J. Hooper
- Bruce Seton - Lt. H. Pennell R.N.
- Sam Kydd - Leading Stoker E. McKenzie R.N.
- Mary Merrett - Helen Field
- Percy Walsh - Chairman of Meeting
- Noel Howlett - First Questioner
- Philip Stainton - Second Questioner
- Desmond Roberts - Admiralty Official
- Dandy Nichols - Caroline
- David Lines - Telegraph Boy
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Dhivya-Kate Chetty
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