as Group Captain J. N. H. Whitworth, D.S.O., D.F.C.
as Count Brisini
as Minor Role
as Anthony
as Duke Popplewell
as Lord Say
as Captain Jumbo Hoyle
as Jack Williams
as Sir Robert Brackenbury / Earl of Surrey
as Stephen, Author
as Duke of Exeter / Mayor of York
as Dr. Erasmus Potter-Shine
as Bruce Banning
as Earl of Salisbury / Sir William Lucy
as Jim Medway
as Kenneth Palmer
as Robert Graham
as Minor role
as Hans Glaser
as Detective Grey
as Insp. Davis
as Dallas Chaytor
as TV Announcer
as Maxwell Oliver
as Sgt. Peter Burden
as Joe Marsh
as Peter Tanner
as Ivan Mason / Dr. James Paxton
as The Major
as Denys Royd
as Mark Roper
as Laurie Baxter
as Gerald Ryton
as Detective Inspector Minter
as Pemberton Grant
as Sergeant Wilson
as Ensor
as Earl of Salisbury/Sir William Lucy
as Sir Robert Brackenbury/Earl of Surrey/Scrivener (uncredited)/Third Citizen (uncredited)/Bishop of Ely (uncredited)
as Laurence Mitchell
as John Clarron
as Father Trasker
as Robert Douglas
as Mr. Garstanton
as Frank Hewitt
as Evans
