Cast
Ralph Richardson
Prof. Heatherville
Michael Hordern
Lt. Cmdr. Lowther
Paul Carpenter
Flt. Lt. Argylle
Kenneth More
Bomb Aimer (uncredited)
Raymond Huntley
Prof. Laxton-Jones
Finlay Currie
Sir Duncan Wills
Desmond Roberts
2nd Club Member
Robin Bailey
Wives' Escort Officer
Pamela Matthews
Mrs. Watlington
Joan Young
Mrs. McVitie
Vida Hope
WAAF Flight Sergeant
Cyril Smith
Flight Sgt. Cox
Robert Wyndham
Major
Patrick Waddington
Group Capt. Aspinall
James Hayter
Warrant Officer
Bill Owen
Paratroop Sergeant (as Bill Rowbotham)
David Hutcheson
Squadron Leader Sowerby
Peggy Evans
Daphne Adams
Arthur Mullard
(uncredited)
Murray Matheson
Wing Cdr. Allen
Richard Attenborough
Jack Arnold
John Laurie
Dr. McVitie
David Tomlinson
Mr. Watlington
Marjorie Rhodes
Mrs. Arnold
Anthony Dawson
Flt. Lt. Norton
Hugh Pryse
Sir Nicholas Hathaway
O.B. Clarence
Old Retainer
Aubrey Mallalieu
1st Club Member