Guest Stars Tony Harwood as Cyberman Charles Pemberton as Cyberman John Hogan 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 George Roubicek as Captain Hopper Aubrey Richards as Professor Parry Shirley Cooklin as Kaftan George Pastell as Eric Klieg Clive Merrison as Jim Callum Peter Hawkins voices Cybermen Voices Michael Kilgarriff as Cyberman Controller
