- David Niven
- Maj. Valentine Moreland
- Glynis Johns
- Nicola Fallaize
- George Coulouris
- Capt. Weiss
- Barry Jones
- Provost
- Kenneth More
- Lionel Fallaize
- Noel Purcell
- Trawler Langley
- Bernard Lee
- Brigadier
- Jeremy Spenser
- Georges
- Martin Boddey
- Sgt. Vogel
- Patric Doonan
- Sgt. Forbes
- Nicholas Phipps
- Minister
- Richard Wattis
- Carruthers - Higher Executive
- John Horsley
- Naval Officer Kent
- George Benson
- Senior Clerk
- David Horne
- Magistrate
- Geoffrey Sumner
- Major - Vet. Corps
- Raymond Young
- Cmdr. Willson
- Richard Marner
- 2nd German Corporal
- Herbert C. Walton
- Newsboy
- Malcolm Farquhar
- Staff Captain
- Charles Collum
- 1st General
- Stanley Rose
- Workman
- John Stratton
- 1st.R.A.F. Officer
- Peter Martyn
- 2nd R.A.F. Officer
- Neil Wilson
- 1st Man
- Geoffrey Denton
- 2nd Man
- Michael Ward
- Senior Clerk's Assistant
- Pat Nye
- A.T.S., W / O
- Marianne Stone
- A.T.S. Auxiliary
- Betty Cooper
- Secretary to Brigadier
- Noel Johnson
- Clark - R.N.
- Jeanne Pali
- Granny Lummette
- Oscar Nation
- Waiter
- Helen Goss
- Provost's Wife
- Philip Stainton
- Constable
- Michael Evans
- 2nd Officer - Com.Ops
- Derek Blomfield
- 1st Officer - Admiralty
- Peter Butterworth
- 1st Naval Rating
- Harold Goodwin
- 2nd Naval Rating
- Basil Dignam
- R.A.M.C. Captain
- Olwen Brookes
- F.A.N.Y.
- Charles Lamb
- Jean - the Cowman
- Michael Rittermann
- German Adjutant
- Henrik Jacobsen
- 1st German Corporal
- Anton Diffring
- 2st German Soldier
- Fritz Krenn
- German Commanding Officer
- Venus
- The Cow
- Chris Adcock
- German Soldier
- Jack Arrow
- German Soldier
- Theodore Bikel
- Man at Newspaper Vendor
- Wallace Bosco
- Islander
- Fred Davis
- Courtroom Spectator
- George Hilsdon
- German Soldier
- Aileen Lewis
- Restaurant Diner
- Fletcher Lightfoot
- Islander
- Terence Longdon
- (uncredited)
- Jim Morris
- Sentry
- Frank Phillips
- Radio Announcer
- Richard Shaw
- Spectator in Courtroom
- Emile Stemmler
- German Sodier
- Harry Terry
- Islander
- Reg Thomason
- Man in Court
