Self (archive footage) (uncredited)
Robert Talbot
Robert Talbot
Dr. Swann
Colonel Jackson
Dr. Robert Blood, Peter's Father
Admiral Sir Bryanston Blyth
Sir John Wyndham
Air Commodore Watchorn
Clive Fisher
Captain Woodhouse - H.M.S. Ajax
Henry Redmond
Geoffrey Tanner
Sir George Redway
Arthur Turner
Doctor Larry Woodhope
Philip Templar
Anton
Charlie Carrington
Tom Peabody
Dexter Pomfret
Roger Carlton
Reverend Owen Harding
Dr. John Lanyon
Eric Keating
Geoffrey Collis
Steven V. Land
Barton Kendrick
Smitty
Natural Davis
Lord Shayne
Gordon Daly
Cambreau
Bert C. Matthews
King Edward IV
Jim Creighton (Sentinel editor)
Clifford 'Cliff' Ames
Austin Lancing
Larry Bryant
Captain Crewe
Lewis Murray
Bert Ballin
William Benson
Peter 'Pete' Snowden
Phillip Marshall
King Richard the Lion-Heart
Lloyd Rogers (archive footage) (uncredited)
Rufus Rondell
Lloyd Rogers
Leonide Kirow
Colonel John Wister
Roger Hilton
Anthony Wayne
Himself
Jay Pierce
Bill Hallam
Fuller
Theseus (archive footage) (uncredited)
Keith Lockridge
Theseus
Renny Whiteoaks
Jim Pearce
Guy Kennion
Sir Reginald Ford
Geoffrey D. 'Geoff' Sherwood
Sir Marcus Ordeyne
Johnathan Steele
Peter Middleton
Detective Inspector Gregory
Capt. Harper
Fergus Wimbush
Robert Hart
Dr. John Watson
Fred Green
George Miles
Gordon Kingsley
William Brown, the Plainclothesman
Alexander Winston
The Plaintiff's Counsel
Hilary Jesson
Archie
Bob Corby
Charles Oddy
Martin Bering
