- Richard Todd
- Lt. Cmdr. Kerans, RN
- William Hartnell
- Leading Seaman Frank
- Akim Tamiroff
- Col. Peng
- Donald Houston
- Lt Weston RN
- Keye Luke
- Capt. Kuo Tai
- Sophie Stewart
- Miss Charlotte Dunlap
- Robert Urquhart
- Flt Lt Fearnley RAF
- James Kenney
- Lt Hett RN
- Richard Leech
- Lt Strain RN
- Ralph Truman
- Vice-Admiral
- Michael Brill
- Lt Berger RN
- Richard Coleman
- Lt. Cmdr. Skinner
- Allan Cuthbertson
- Captain Donaldson RN
- Barry Foster
- PO McCarthy RN
- Thomas Heathcote
- Mr. Monaghan RN
- Sam Kydd
- AB Walker RN
- Cyril Luckham
- Commander-in-Chief Far Eastern Station
- Ewen Solon
- ERA Williams RN
- Gene Anderson
- Ruth Worth
- Linda Aung
- Chinese Baby
- David Aylmer
- Flag Lieutenant to Commander-in-Chief
- Ian Bannen
- AB Bannister RN
- Ballard Berkeley
- Lt. Col. Dewar-Durie
- Tom Bowman
- Consort Commander
- Donald Bradley
- 2nd Cribbage Player
- Alfred Burke
- Petty Officer
- Jeremy Burnham
- Flag Lieutenant to Vice-Admiral
- John Charlesworth
- Roberts
- Tsai Chin
- Midnight - 1st Sampan Woman
- Anthony Chinn
- Chinese People's Liberation Army Officer
- Ah Chong Choy
- 2nd Chinese Trader
- Dennis Clinton
- Sick Bay Attendant
- Kenneth Cope
- Mr. McNamara
- Harold Coyne
- RN Officer
- Bernard Cribbins
- Sonar Operator / 1st Cribbage Player (uncredited)
- Cesar Da'Rocha
- 1st Chinese Trader
- Edward Dentith
- Consort Engineer Officer
- Basil Dignam
- British Ambassador at Nanking
- Robert Dom
- Chinese Naval Lieutenant
- N.C. Doo
- Chinese Surgeon
- Mabel Etherington
- Guest
- Keith Faulkner
- Ordinary Signalman
- Andy Ho
- Chinese Nationalist Medical Officer
- John Horsley
- Chief Staff Officer
- Peter Hutton
- Consort Lt. No. 1
- Ray Jackson
- Telegraphist French, RN
- Murray Kash
- Minor Role
- Murray Leask
- Petty Officer
- Barbara Lee
- 2nd Sampan Woman
- Wong Luk
- Capt. Meh
- Yah Ming
- Chinese Steward
- John Paul
- Staff Officer Operations
- Frank Phillips
- Narrator
- Keith Rawlings
- Crocker
- Anne Ridler
- Embassy Minister's Secretary
- Brian Smith
- Boy Martin
- Tom Tann
- 1st Chinese Male Nurse
- Grace Tay
- Chinese Nurse
- John A. Tinn
- Chinese pilot
- Philip Vickers
- Surgeon Lt. Packard
- Lawrence Ward
- Seaman on the Bridge
- Rhett Ward
- Lt. Mirehouse
- Gordon Whiting
- Surgeon Lt. Alderton
- Soo Ah Wong
- Gran
- Fred Wood
- Unconscious Seaman
- Lian-Shin Yang
- Chinese Photographer
