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

character - Peter

character - Andy

character - Newscaster

character - Lt. Keith Ford

character - SHADO Radio Operator

character - Lt. Ford

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

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

character - Sir Humphrey Burton / Saunders / 1st Guard (voice)

character - Agent (voice)

character - Agent Blake / Reed / Agent / Signalman (voice)

character - General Brompton / Blake / Operator (voice)

character - Agent Blake / Professor Graham (voice)

character - Officer / General / 1st Native (voice)

character - Agent Blake / Professor Soames (voice)

character - Agent Blake / Burrows / Dave Marden (voice)

character - Brother Thomas / Archdeacon (voice)

character - Joe / Assassin / Commentator (voice)

character - Lady Martha Hazlewell (voice)

character - Sam Loover (voice)

character - John Tracy / Narrator (voice)

character - Sub. Lt. X-3