Ewen Montagu

Charles Cholmondeley

Jean Leslie

Hester Leggett

Ian Fleming

Admiral John Godfrey

Ivor Montazac

Iris Montazac

Bentley Purchase

Winston Churchill

Sgt. Roger Dearborn / Glyndwr Michael

Adolf Clauss

Connie Bukes

John Masterman

Hilda Georgina Cholmondeley

Capt. David Ainsworth

Salvador Gomez-Beare

Jock Horsfall

Charles Fraser-Smith

Karl Kuhlenthal

Colonel Alexis von Roenne

Admiral Moreno

Ana Flores

Dr. Del Torno

Colonel Cerruti

Judge Pascual del Pobil

Teddy

Nurse Tate

Doris Michael

Coroner Birtwistle

Coroner Pinfield

Frank Sawyer (Churchill Butler)

Patricia Trehearne

Lt. Bill Jewell

Twenty Committee (uncredited)