- David Farrar
- Sammy Rice
- Kathleen Byron
- Susan
- Jack Hawkins
- R.B. Waring
- Leslie Banks
- Col. A.K. Holland
- Cyril Cusack
- Cpl. Taylor
- Robert Morley
- The Minister
- Emrys Jones
- Joe
- Renée Asherson
- A.T.S. Corporal
- Walter Fitzgerald
- Brine
- Anthony Bushell
- Maj. Strang
- Milton Rosmer
- Prof. Mair
- Michael Gough
- Capt. Dick Stuart
- Michael Goodliffe
- Till
- Henry Caine
- Sgt. Maj. Rose
- Sidney James
- 'Knucksie' Moran - Barkeeper
- Sam Kydd
- Crowhurst - Door Sentry
- Geoffrey Keen
- Pinker
- June Elvin
- Gillian
- David Hutcheson
- Norval
- Roddy Hughes
- Welsh Doctor
- Bryan Forbes
- Peterson - Dying Gunner
- James Dale
- Brigadier
- Elwyn Brook-Jones
- Gladwin
- Roderick Lovell
- Capt. Pearson
- James Carney
- Sgt. Groves
- Ted Heath's Kenny Baker Swing Group
- Hickory Tree Band
- Kenny Baker
- Trumpeter - Hickory Tree Band
- Frederic Lewis
- Fred Lewis - Musician
- Jackie Amstrong
- Trombone Player - Hickory Tree Band
- Hamlyn Benson
- Prof. Char
- Wallace Bosco
- Passerby
- Pete Chilver
- Guitarist - Hickory Tree Band
- Jan Conrad
- Polish Officer
- Michael Conry
- Soldier
- Jan Frankowski
- Man in Pub
- Claude Frederic
- Col. D. Strachey
- Johnnie Gray
- Saxophonist - Hickory Tree Band
- Julia Lang
- Danny's Mother
- Patrick Macnee
- Man at Committee Meeting
- Richard Neilson
- American in Hickory Club
- Fred Nicholas
- Officer at Gun Trial
- Sonya O'Shea
- Mrs. Taylor
- Jack Parnell
- Drummer - Hickory Tree Band
- Charlie Short
- Bass Player - Hickory Tree Band
- Norman Stenfalt
- Pianist - Hickory Tree Band
- John Stratton
- Young Army Officer at Committee Meeting
- Jack Watson
- Undetermined Secondary Role
