Patrick Troughton
The Doctor (44 eps)
David Savile
Lieutenant Carstairs (9 eps)
Sally Faulkner
Isobel Watkins (8 eps)
Peter Halliday
Packer (8 eps)
Kevin Stoney
Tobias Vaughn (8 eps)
John Levene
John Benton (7 eps)
Robert Sidaway
Captain Jimmy Turner (7 eps)
Nicholas Courtney
Brig. Lethbridge-Stewart (7 eps)
Louise Pajo
Gia Kelly (6 eps)
John Witty
Computer Voice (voice) (6 eps)
Philip Ray
Eldred (6 eps)
Ronald Leigh-Hunt
Radnor (6 eps)
Ralph Carrigan
Robot (6 eps)
James Thornhill
Sergeant Walters (6 eps)
Ronald Allen
Rago (5 eps)
Arthur Cox
Cully (5 eps)
Felicity Gibson
Kando (5 eps)
Giles Block
Teel (5 eps)
John Hicks
Quark (5 eps)
Gary Smith
Quark (5 eps)
Freddie Wilson
Quark (5 eps)
Kenneth Ives
Toba (5 eps)
Emrys Jones
The Master of the Land of Fiction (5 eps)
Sheila Grant
Quarks (voice) (5 eps)
Bernard Horsfall
Gulliver (5 eps)
John Atterbury
Alien Guard (4 eps)
Johnson Bayly
Balan (4 eps)
Edward Burnham
Professor Watkins (4 eps)
Pat Gorman
Cyberman (4 eps)
Peter Hawkins
Dalek (voice) (3 eps)
Philip Madoc
Solon (3 eps)
Vernon Dobtcheff
Scientist (3 eps)
Walter Fitzgerald
Senex (3 eps)
Alan Gerrard
Bovem (3 eps)
John Cross
Council Member (3 eps)
Ronald Mansell
Council Member (3 eps)
Bill Wiesener
Robot (3 eps)
Terry Wright
Robot (3 eps)
Paul Alexander
Soldier (3 eps)
Ian Hines
Soldier (3 eps)
Richard Ireson
Soldier (3 eps)
Sheila Dunn
Telephone Operator (3 eps)
Ian Fairbairn
Mark Gregory (3 eps)
Charles Finch
Cyberman (3 eps)
John Spradbury
Cyberman (3 eps)
Sonny Caldinez
Ice Warrior (3 eps)
Brian Cant
Tensa (2 eps)
Hamish Wilson
Jamie (2 eps)
Barbara Loft
Child (2 eps)
Sylvestra Le Touzel
Child (2 eps)
Timothy Horton
Child (2 eps)
Martin Langley
Child (2 eps)
Philip Ryan
Redcoat (2 eps)
Christine Pirie
Princess Rapunzel (2 eps)
Sue Pulford
The Medusa (2 eps)
Christopher Robbie
Karkus (2 eps)
Edward Dentith
Major-General Rutlidge (2 eps)
Geoffrey Cheshire
Jack Tracy (2 eps)
Clifford Earl
Major Branwell (2 eps)
Norman Hartley
Sergeant Peters (2 eps)
Richard King
Cyberman (2 eps)
Peter Thornton
Cyberman (2 eps)
Terence Bayler
Major Barrington (1 eps)
David Troughton
Peladon (1 eps)
Leslie Schofield
Leroy (1 eps)
Harry Towb
Osgood (1 eps)
Rudolph Walker
Harper (1 eps)
Philip Voss
Wahed (1 eps)
Malcolm Terris
Etnin (1 eps)
Nicolette Pendrell
Tolata (1 eps)
Christopher Reynalds
Child (1 eps)
David Reynalds
Child (1 eps)
David Reynolds
Child (1 eps)
John Greenwood
D'Artagnan / Sir Lancelot (1 eps)
David Cannon
Cyrano (1 eps)
Gerry Wain
Blackbeard (1 eps)
Murray Evans
Lorry Driver (1 eps)
Stacy Davies
Private Perkins (1 eps)
Walter Randall
Patrolman (1 eps)
Derek Chafer
Cyberman (1 eps)
Terence Denville
Cyberman (1 eps)
Clyde Pollitt
Third Time Lord (1 eps)
Trevor Martin
Second Time Lord (1 eps)
Michael Wisher
(voice, uncredited) (1 eps)
Terry Walsh
UNIT Soldier (uncredited) (1 eps)
Brian Peck
Dervish (1 eps)
Dominic Allan
Policeman (1 eps)
Peter Thompson
Workman (1 eps)