Colin Baker as The Doctor

Nicola Bryant as Peri Brown

Maurice Colbourne as Lytton

Brian Glover as Griffiths

Terry Molloy as Russell

James Beckett as Payne

David Banks as Cyber Leader

Michael Kilgarriff as Cyber Controller

Faith Brown as Flast

Sarah Greene as Varne

Michael Attwell as Bates

Jonathan David as Stratton

Brian Orrell as Cyber Lieutenant

John Ainley as Cyberman

Stephen Churchett as Bill

Stephen Wale as David

Sarah Berger as Rost

Esther Freud as Threst