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