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