Lyndon Brook

as Dr. Ian Breck

as Pugh

as Stavrin

as Begley

as Gerry Domford

as Bit Role (uncredited)

as Brian Carter

as Lt. Walsh (uncredited)

as Johnny Sanderson

as Leslie Parrish

as King George VI

as Philotas

as Philip McDowell

as Dr. Manx

as Lyall

as Gillam

as Victor Franklin

as Mark

as Martin Eliot

as Alan Haynes

as Cartney

as Lt. Col. Brant

as Ronald Bridges