Ian Hunter

as Self (archive footage) (uncredited)

as Robert Talbot

as Robert Talbot

as Dr. Swann

as Dr. Robert Blood, Peter's Father

as Colonel Jackson

as Admiral Sir Bryanston Blyth

as Sir John Wyndham

as Air Commodore Watchorn

as Clive Fisher

as Henry Redmond

as Captain Woodhouse - H.M.S. Ajax

as Sir George Redway

as Geoffrey Tanner

as Logan

as Arthur Turner

as Doctor Larry Woodhope

as Anton

as Philip Templar

as Charlie Carrington

as Tom Peabody

as Dexter Pomfret

as Spy

as Roger Carlton

as Eric Keating

as Geoffrey Collis

as Dr. John Lanyon

as Barton Kendrick

as Steven V. Land

as Reverend Owen Harding

as Lord Shayne

as Smitty

as Gordon Daly

as Bert C. Matthews

as Cambreau

as Natural Davis

as King Edward IV

as Captain Crewe

as Clifford 'Cliff' Ames

as Jim Creighton (Sentinel editor)

as Lewis Murray

as Austin Lancing

as Larry Bryant

as King Richard the Lion-Heart

as Bert Ballin

as Lloyd Rogers (archive footage) (uncredited)

as William Benson

as Phillip Marshall

as Peter 'Pete' Snowden

as Anthony Wayne

as Lloyd Rogers

as Roger Hilton

as Leonide Kirow

as Self

as Rufus Rondell

as Colonel John Wister

as Bill Hallam

as Fuller

as Jay Pierce

as Sir Marcus Ordeyne

as Renny Whiteoaks

as Keith Lockridge

as Sir Reginald Ford

as Theseus

as Jim Pearce

as Theseus (archive footage) (uncredited)

as Geoffrey D. 'Geoff' Sherwood

as Capt Watts-Wynyard

as Detective Inspector Gregory

as Johnathan Steele

as Peter Middleton

as Guy Kennion

as Jim Brandon

as Fergus Wimbush

as Capt. Harper

as Robert Hart

as Fred Green

as Dr. John Watson

as George Miles

as Gordon Kingsley

as Andrew McLeod

as William Brown, the Plainclothesman

as Alexander Winston

as Allen Stockbridge

as Hilary Jesson

as The Plaintiff's Counsel

as Bob Corby

as Archie

as Charles Oddy

as Martin Bering

as Self - Host

as Mallowby

as Sir Malcolm Saville

as Sir Richard of the Lea