- Peter Finch
- Jan Smit
- Eva Bartok
- Anna
- Tony Britton
- Major Dillon
- Alexander Knox
- Walter Keyser
- Malcolm Keen
- Johan Smit
- Tim Turner
- Dutch Lieutenant
- John Horsley
- Commander Bowerman
- Melvyn Hayes
- Willem
- Christopher Rhodes
- Alex
- Alfred Burke
- Dealer
- Carl Jaffe
- Diamond Merchant
- Keith Pyott
- Diamond Merchant
- Oscar Quitak
- Diamond Merchant
- George Pravda
- Portmaster
- Arnold Marlé
- (as Arnold Marle)
- Peter Swanwick
- Peter
- John Bailey
- Officer
- Lex Goudsmit
- Boatman
- Petra Davies
- Menschi
- John Le Mesurier
- Colonel Janssen
- Frederick Schiller
- Tugmaster
- Michael Blakemore
- British Officer
- Winston Churchill
- Self
- George Lane Cooper
- Dutch Soldier
- George Crawford
- Dutch Soldier
- Keith Faulkner
- Naval Officer
- Ernest Fennemore
- Dutch Resistance Fighter
- Arthur Gomez
- Customer in Dutch Bar
- Alan Hayward
- Leyden
- George Hilsdon
- Diamond Merchant
- Wim Lindner
- Soldier
- Steve Plytas
- Bar Owner
- John Richardson
- Lt. Williams
- Roy Roberts
- Boy Who Quells Bell
- Gerik Schjelderup
- De Matteos
- John Sharplin
- Col. Marsden
- Karel Stepanek
- Diamond Merchant
- Reg Thomason
- Dutch Resistance Fighter
- John Wilder
- Commuter
