Guest Stars Charles Pemberton as Cyberman John Hogan as Cyberman Tony Harwood as Cyberman Hans De Vries as Cyberman Reg Whitehead as Cyberman Richard Kerley as Cyberman Ronald Lee as Cyberman Kenneth Seeger as Cyberman Roy Stewart as Toberman Aubrey Richards as Professor Parry Shirley Cooklin as Kaftan George Roubicek as Captain Hopper George Pastell as Eric Klieg Clive Merrison as Jim Callum Peter Hawkins voices Cybermen Voices Michael Kilgarriff as Cyberman Controller
