Guest Stars John Maxim as Cyberman Sonnie Willis as Cyberman Arnold Chazen as Scientist Edward Phillips as Scientist Alan Wells as Scientist Robin Scott as Scientist Ron Pinnell as Scientist Victor Pemberton as Scientist Leon Maybank as Scientist Derek Calder as Scientist Barry Ashton as Scientist André Maranne as Benoit John Rolfe as Sam Patrick Barr as Hobson Michael Wolf as Nils Mark Heath as Scientist Ralph Debayo Alan Rowe as Dr. Evans / Space Control
