On screen
Cast
21 credited performers
Peter Davison
The Doctor
Matthew Waterhouse
Adric
Janet Fielding
Tegan
Sarah Sutton
Nyssa
James Warwick
Scott
Clare Clifford
Kyle
Beryl Reid
Briggs
Artwork unavailable
June Bland
Berger
Artwork unavailable
Steve Morley
Walters
Artwork unavailable
Suzi Arden
Snyder
Ann Holloway
Mitchell
Artwork unavailable
Anne Clements
Trooper
Mark Straker
Trooper
Artwork unavailable
Alec Sabin
Ringway
Mark Fletcher
Crewmember
Artwork unavailable
Christopher Whittingham
Crewmember
David Banks
Cyber Leader
Artwork unavailable
Mark Hardy
Cyber Lieutenant
William Hartnell
The Doctor (1) (archive footage)
Patrick Troughton
The Doctor (2) (archive footage)
Tom Baker
The Doctor (4) (archive footage)