Peter Davison
The Doctor
Acting
Janet Fielding
Tegan Jovanka
Acting
Mark Strickson
Vislor Turlough
Acting
Cyril Luckham
The White Guardian
Acting
Valentine Dyall
The Black Guardian
Acting
Keith Barron
Striker
Acting
Christopher Brown
Marriner
Acting
Lynda Baron
Wrack
Acting
Leee John
Mansell
Acting
James McClure
First Officer
Acting
Tony Caunter
Jackson
Acting
Clive Kneller
Collier
Acting