Acting (Member of Whitehall Conference)

Acting (Lloyd)

Acting (Narrator)

Acting (Johnson (uncredited))

Acting (Major Paul Amery)

Acting (Dr. Ballan)

Acting (Det. Sgt. Shafto (as Gerald Anderson))

Acting (Chairman)

Acting (Police Sergeant (uncredited))

Acting (Carlsen)

Acting (Coding Clerk (uncredited))

Acting (Mr. Brown)

Acting (Unidentified role)