as Sam Loover / Russian Pilot / Moscow Air Defence Director / Anton / Captain William Barry (voice)

as Peter

as Andy

as Newscaster

as Lt. Keith Ford

as SHADO Radio Operator

as Lt. Ford

as Ambassador's Aide / Saunders / Captain / London Tower Controller (voice)

as Agent Blake / Hartley / Doctor / Brooks / 3rd Technician (Port Trennick) (voice)

as Sir Humphrey Burton / Saunders / 1st Guard (voice)

as Agent (voice)

as Agent Blake / Reed / Agent / Signalman (voice)

as General Brompton / Blake / Operator (voice)

as Agent Blake / Professor Graham (voice)

as Officer / General / 1st Native (voice)

as Agent Blake / Professor Soames (voice)

as Agent Blake / Burrows / Dave Marden (voice)

as Brother Thomas / Archdeacon (voice)

as Joe / Assassin / Commentator (voice)

as Lady Martha Hazlewell (voice)

as

as Sam Loover (voice)

as John Tracy / Narrator (voice)

as Sub. Lt. X-3