Tom Baker
The Doctor (26 eps)
Louise Jameson
Leela (26 eps)
John Leeson
K9 (voice) (26 eps)
Chris Tranchell
Andred (6 eps)
Milton Johns
Kelner (6 eps)
Max Faulkner
Rebel (uncredited) (6 eps)
John Arnatt
Borusa (5 eps)
Hilary Ryan
Rodan (5 eps)
Stan McGowan
Vardan (voice) (4 eps)
Tom Kelly
Vardan (voice) (4 eps)
Colin Douglas
Reuben (4 eps)
John Abbott
Vince (4 eps)
Michael Sheard
Lowe (4 eps)
Wanda Ventham
Thea Ransome (4 eps)
Daphne Heard
Martha Tyler (4 eps)
Edward Evans
Ted Moss (4 eps)
Scott Fredericks
Maximillian Stael (4 eps)
Edward Arthur
Adam Colby (4 eps)
Richard Leech
Gatherer Hade (4 eps)
Jonina Scott
Marn (4 eps)
Roy Macready
Cordo (4 eps)
William Simons
Mandrel (4 eps)
Michael Keating
Goudry (4 eps)
James Maxwell
Jackson (4 eps)
Adrienne Burgess
Veet (4 eps)
Alan Lake
Herrick (4 eps)
Jonathan Newth
Orfe (4 eps)
Imogen Bickford-Smith
Tala (4 eps)
Gai Waterhouse
Presta (4 eps)
Charles Morgan
Gold Usher (3 eps)
Dennis Edwards
Lord Gomer (3 eps)
Sean Caffrey
Lord Palmerdale (3 eps)
Alan Rowe
Skinsale (3 eps)
Brian Grellis
Safran (3 eps)
Annette Woollett
Adelaide Lesage (3 eps)
Frederick Jaeger
Professor Marius (3 eps)
Jim McManus
Opthalmologist (3 eps)
Denis Lill
Dr. Fendelman (3 eps)
Geoffrey Hinsliff
Jack Tyler (3 eps)
Henry Woolf
Collector (3 eps)
James Marcus
Rask (3 eps)
David Rowlands
Bisham (3 eps)
Godfrey James
Tarn (3 eps)
Norman Tipton
Idas (3 eps)
Ray Callaghan
Ablif (3 eps)
Michael Mundell
Jasko (3 eps)
Derek Deadman
Stor (3 eps)
Jimmy Gardner
Idmon (3 eps)
Rio Fanning
Harker (2 eps)
Roy Herrick
Parsons (2 eps)
Elizabeth Norman
Marius' Nurse (2 eps)
Roderick Smith
Cruikshank (2 eps)
Pat Gorman
A Medic (2 eps)
John Scott Martin
Nucleus (2 eps)
Jay Neill
Silvey (2 eps)
Derek Martin
David Mitchell (2 eps)
Derek Crewe
Synge (2 eps)
Colin McCormack
Commander (2 eps)
Frank Jarvis
Ankh (2 eps)
Richard Shaw
Lakh (2 eps)
Stacey Tendeter
Naia (2 eps)
Christine Pollon
Voice of the Oracle (voice) (2 eps)
Stuart Fell
Sontaran (2 eps)
Cy Town
Extra (uncredited) (2 eps)
Reginald Jessup
Lord Savar (1 eps)
Ralph Watson
Ben (1 eps)
Edmund Pegge
Meeker (1 eps)
Anthony Rowlands
Crewman (1 eps)
Nell Curran
Reception Nurse (1 eps)
Kenneth Waller
Hedges (1 eps)
Graham Simpson
Hiker (1 eps)
Carole Hopkin
Nurse (1 eps)
Christopher Christou
Guard (1 eps)
Michael Harley
Bodyguard (1 eps)
Eric Danot
Castellan Guard (1 eps)