Ralph Richardson
Prof. Heatherville
Raymond Huntley
Prof. Laxton-Jones
John Laurie
Dr. McVitie
Ernest Jay
Dr. Dainty
David Tomlinson
Mr. Watlington
Finlay Currie
Sir Duncan Wills
Norman Webb
Dr. Wainwright
Michael Hordern
Lt. Cmdr. Lowther
Pamela Matthews
Mrs. Watlington
Joan Haythorne
Mrs. Laxton-Jones
Joan Young
Mrs. McVitie
Ann Wilton
Mrs. Dainty
Richard Attenborough
Jack Arnold
David Hutcheson
Squadron Leader Sowerby
Patrick Waddington
Group Capt. Aspinall
Cyril Smith
Flight Sgt. Cox
James Hayter
Warrant Officer
D. Bradley Smith
Air Marshal Cotter
Robin Bailey
Wives' Escort Officer
Hugh Dempster
Sqdn. Ldr. Slatter
Kenneth Buckley
Sqdn. Ldr. Buckley
Paul Carpenter
Flt. Lt. Argylle
Anthony Dawson
Flt. Lt. Norton
Robert Long
Flying Officer Davies
Richard Mantell
Air Vice-Marshal
Murray Matheson
Wing Cdr. Allen
Anthony Wyckham
Flying Officer Ogden
Peggy Evans
Daphne Adams
Ingrid Forrest
Penelope Birkenshaw
Geraldine Keyes
Phyllis Hammond
Vida Hope
WAAF Flight Sergeant
Sonia Elverson
WAAF Teller
Robert Wyndham
Major
Andrew Blackett
Captain
Bill Owen
Paratroop Sergeant (as Bill Rowbotham)
Tony Arpino
1st Commando
Peter March
2nd Commando
Bob Elson
3rd Commando
Roger Keyes
4th Commando
Trevening Hill
5th Commando
Edward Hodge
6th Commando
Joseph Almas
Dr. Klemmerhahn
Arthur Rieck
Lt. Hense
Ernest Urbank
1st Sentry
Karl Morel
2nd Sentry
Marjorie Rhodes
Mrs. Arnold
Edward Lexy
Sir Desmond Prosser
Hugh Pryse
Sir Nicholas Hathaway
O.B. Clarence
Old Retainer
Aubrey Mallalieu
1st Club Member
Desmond Roberts
2nd Club Member
Guy Belmore
3rd Club Member
Alvar Liddell
BBC Announcer (voice)
Kenneth More
Bomb Aimer (uncredited)
Arthur Mullard
(uncredited)
Ian Selby
Man at Dance (uncredited)