as Capt. Samuel Murdock
as Henderson
as Booth Pennock
as Lieut. Fergus McKenzie
as BBC Radio Announcer (voice) (uncredited)
as Dr. McBain
as Dr. Philip Gray
as Maj. Lee - Doctor (uncredited)
as Leicester
as Physician (uncredited)
as Captain (uncredited)
as Captain Griffiths (uncredited)
as Dutch Military Messenger (uncredited)
as Mr. Lang, government agent
as Astrologer
as Chalmers
as Nazi Major
as Pilot (uncredited)
as Capt. Bibberbeigh
as Phillip Musgrave
as Melling
as Editor Richard Daniels
as Lord J.B. Abbington
as Gavin Gore
as Captain Perry (Uncredited)
as William Forsythe
as Karl
as Sergeant (uncredited)
as Madden
as Capt. Strong
as Col. Crawson
as G. G. Temple
as Inspector Kendricks
as Major Severn
as Weldon Laydon
as Dr. Barth
as Herr Joyce / Lord Haw-Haw
as Bagley
as Prentiss Johns
as Herbert Evans
as Redman
as Herbert Willett
as Oliver Jenkins
as Harry
as MacFadden
as Plainclothesman
as Passenger Describing His Dream
as Mr. Wallingford
as Rutledge