Hugh Williams

Colin Metcalfe

Griffith Jones

Police Inspector Gunter (as Griffiths Jones)

Deborah Kerr

Kari Alstad

Ralph Richardson

Frank Lockwood

Francis L. Sullivan

Kommandant Ulrich Wettau

Roland Culver

Cmdr. Pittwaters

Finlay Currie

Capt. Alstad

Niall MacGinnis

Olaf

Elizabeth Mann

Gerda

Raymond Huntley

Patricia Medina

Ingrid

Roland Pertwee

Capt. Waverley

Henry Oscar

Newspaper Editor

David Horne

Evans, Foreign Editor

Henry Hewitt

Jack, News Editor

John Warwick

Milligan, Reporter in Fleet Street Pub

Brefni O'Rorke

Political Journalist

Bernard Miles

McAllister (Irish Soldier)

Beckett Bould

Bergen, Spokesman of Langedal

Olaf Olsen

Langedal's Schoolmaster

Gus McNaughton

Army Sergeant

George Carney

Harry, Soldier in Fleet Street Pub

John Salew

"Man-in-the-Street" in Fleet Street Pub

Meriel Forbes

Milly, the Barmaid

Philip Friend

Pilot

George Merritt

German Trawler Captain

John Boxer

U-Boat Commander

H Victor Weske

Heinrich

Gerhard Kempinski

Barman, Bia Tonne in Oslo

George Spence

Norwegian Villager (uncredited)