- Raymond Massey
- John Cabal / Oswald Cabal
- Edward Chapman
- Pippa Passworthy / Raymond Passworthy
- Ralph Richardson
- The Boss
- Margaretta Scott
- Roxana / Rowena (as Margueretta Scott)
- Cedric Hardwicke
- Theotocopulos
- Maurice Braddell
- Dr. Harding
- Sophie Stewart
- Mrs. Cabal
- Derrick De Marney
- Richard Gordon
- Ann Todd
- Mary Gordon
- Pearl Argyle
- Catherine Cabal
- Kenneth Villiers
- Maurice Passworthy
- Ivan Brandt
- Morden Mitani
- Anne McLaren
- The Child
- Patricia Hilliard
- Janet Gordon
- Charles Carson
- Great Grandfather
- Patrick Barr
- World Transport Official
- Noel Brophy
- Irishman
- John Clements
- The Airman
- Aubrey Dexter
- WT7 Captain
- Thomas Gallagher
- Growling Guard
- Arthur Hambling
- Man Toasting the Boss
- Anthony Holles
- Simon Burton
- Allan Jeayes
- Mr. Cabal
- Pickles Livingston
- Horrie Passworthy
- George Sanders
- Pilot
- Abraham Sofaer
- The Jew
- George Spence
- Heckling Soldier
- Terry-Thomas
- Man of the Future
- John Wilder
- Pilot / Wings Over the World Council Member (uncredited)
