Merle Oberon as Mrs. Richardson

Ralph Richardson as Wing Commander Richardson

June Duprez as June

Flora Robson as Queen Elizabeth I (archive footage)

Robert Douglas as Briefing Officer

Anthony Bushell as Pilot

Brian Worth as Bobby

Austin Trevor as Schulemberg - German Air Chief of Staff

Ivan Brandt as Air Officer

G.H. Mulcaster as Controller

Herbert Lomas as Holveg

Milton Rosmer as Head of Observer Corps

Ronald Adam as German Bomber Chief

Robert Rendel as British Chief of Air Staff

John Longden as Unnamed Character

Archibald Batty as Air Officer

Ian Fleming as Air Officer

Charles Carson as Anti-aircraft Officer

John Penrose as Unnamed Character

Frank Tickle as Unnamed Character

John Robinson as Unnamed Character

Derrick De Marney as Bill - Navigator

Carl Jaffe as Unnamed Character

Gerald Case as Unnamed Character

Torin Thatcher as Seaman Receiving Information About German Activity

Bernard Miles as Civilian Observer Controller

E. V. H. Emmett as Commentator