John Mills

Major Harvey

Cecil Parker

Colonel E.F. Logan

Sid James

Porter YMCA

Bryan Forbes

Butterfield

Barbara Hicks

Hester

Michael Hordern

Governor of Gibralter

Marius Goring

Karl Nielson

Vera Day

Angela

M.E. Clifton James

Himself / General Montgomery

Patrick Allen

Col. Mathers

Patrick Holt

Col. Dawson

Leslie Phillips

Major Tennant

Duncan Lamont

Wing Cdr. Bates

Anthony Sagar

Villa - Guard Sergeant

Kenneth J. Warren

F/O Davies

James Hayter

Sgt. Adams

Brian Weske

Despatch Rider

Harry Fowler

Civilian - End Scene

Bill Nagy

American Captain

Edward Judd

Another Soldier

Victor Maddern

Orderly Sergeant

Desmond Roberts

Brigadier

Victor Beaumont

Gottmann - Commando

Alfie Bass

The Small Man

John Le Mesurier

Adjutant RAPC

Walter Gotell

German Colonel

George Eugeniou

Garcia

John G. Heller

German Sergeant

Frederick Jaeger

Junior German Officer

David Lodge

Sergeant RAPC

MacDonald Parke

American General

Marne Maitland

Arab Proprietor

Maureen Connell

Peggy

Sam Kydd

Go-Between

Allan Cuthbertson

Guards Officer

Ronnie Stevens

MI5 Tail

Steven Berkoff

Minor Role (uncredited)