The Doctor
Patrick Troughton
Polly
Anneke Wills
Voice of Rinberg
Denis McCarthy
Scientist
Barry Ashton
Derek Calder
Arnold Chazen
Leon Maybank
Victor Pemberton
Edward Phillips
Ron Pinnell
Robin Scott
Alan Wells
Ben Jackson
Michael Craze
Mark Heath
Cyberman
John Maxim
Sonnie Wills
Peter Greene
Keith Goodman
Reg Whitehead
Cyberman Voices
Peter Hawkins
Jamie McCrimmon
Frazer Hines
Hobson
Patrick Barr
Benoit
André Maranne
Nils
Michael Wolf
Sam
John Rolfe
Ralph
Voice from Space Patrol/Dr. Evans
Alan Rowe
Script Editor
Gerry Davis
Director
Morris Barry
Writer
Kit Pedler
Producer
Innes Lloyd