John Phillips

as King Dafydd

as Dr. Charles Langley-Beard

as Wintour

as Examining Judge

as Magistrate

as DS Bull

as Colonel Harcourt Badger Owen

as Francis Urcombe

as Naso

as Josiah Wedgwood

as Francis Urcombe

as Brander Merton

as Grand Duke Nicholas

as Sir Gregory Grogram

as Koestler (archive footage)

as Mr. Frazer

as Jack - Frazer Senior

as Professor Dyne

as Lanning Koestler

as Rev. Howard Whithead

as Examining Judge

as Maitre Lacan

as Klintzch

as Arnold Bingley

as Commandant

as Piso

as Councillor Percival

as Stanley Preston

as Major General Atkins

as Colonel Gaillarde

as Major General Atkins

as Mr. Tredgold

as John Anthony

as Insp. Morgan

as Councillor Percival

as Cardinal Runan

as Forbes-Wainwright

as Sir Gilbert Hardacre

as Elzevir Block

as Alfred Truelove

as Bishop of Winchester

as Rear Admiral

as Bracewell - U.S. Delegate

as Col. Fowler

as Det. Chief Superintendent Robins

as Tom Stone

as Trifonov

as Trifonov

as Hooper Moulsworth

as Nesbitt

as Chief Superintendent Gault

as Professor Stephens

as Trifonov

as Prince Galitzin

as Coyannis

as General Leighton

as Mr. Tulkinghorn

as Frank

as Boat Owner Spokesman (uncredited)

as Prosecutor at Esterhazy Trial

as The Mayor

as Doctor

as Willis Croft

as Hooper Moulsworth

as Magistrate

as Mr. Parry

as Deputy Morgan

as Engineer Officer

as Von Brondorff

as Lt. Col. Turbojet