as Willy Urlowe ("The Contraption")

as John Newman

as John

as Bob

as Marcadé

as Verges

as Journalist

as Voltemand

as Donald Newman

as Detective

as Sgt Keith Lardner

as Whiskers

as Gary Belstead

as Cliffie

as Hiseman

as Miner (uncredited)

as Philip Larch

as Cruikshank