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)