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

Logan

Arthur Turner

Doctor Larry Woodhope

Philip Templar

Anton

Charlie Carrington

Tom Peabody

Dexter Pomfret

Roger Carlton

Spy

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

Lloyd Rogers (archive footage) (uncredited)

Bert Ballin

William Benson

Peter 'Pete' Snowden

Phillip Marshall

King Richard the Lion-Heart

Self

Rufus Rondell

Lloyd Rogers

Leonide Kirow

Colonel John Wister

Roger Hilton

Anthony Wayne

Jay Pierce

Bill Hallam

Fuller

Theseus (archive footage) (uncredited)

Keith Lockridge

Theseus

Renny Whiteoaks

Jim Pearce

Sir Reginald Ford

Geoffrey D. 'Geoff' Sherwood

Sir Marcus Ordeyne

Peter Middleton

Johnathan Steele

Jim Brandon

Detective Inspector Gregory

Guy Kennion

Capt Watts-Wynyard

Capt. Harper

Fergus Wimbush

Robert Hart

Dr. John Watson

Fred Green

George Miles

Gordon Kingsley

William Brown, the Plainclothesman

Andrew McLeod

Allen Stockbridge

Alexander Winston

The Plaintiff's Counsel

Hilary Jesson

Archie

Bob Corby

Charles Oddy

Martin Bering