CAST regulars:

William Hartnell as Doctor #1 [ eps 1 - 29 ]

William Hartnell - The very first Doctor to grace our screens was a rather mysterious irascible character, with a fine sense of mischief. William Hartnell played the Doctor from 1963 to 1966. He completed 29 stories (119 episodes).

Patrick Troughton as Doctor #2 [ eps 30 - 50 ]

Patrick Troughton - The second incarnation of the Doctor  turned into a whimsical hobo who hid a razor sharp intellect behind the exterior character of a fool. Patrick Troughton played the Doctor from 1966 to 1969. He completed 21 stories (119 episodes).
 

Jon Pertwee as Doctor #3 [ eps 51 - 74 ]

Jon Pertwee - With a swirling cloak, Jon Pertwee played the third incarnation of the Doctor. He brought a dash to the role as he raced to the rescue in his yellow car, Bessie. Jon Pertwee played the Doctor from 1970 to 1974. He completed 24 stories (128 episodes).

Tom Baker as Doctor #4 [ eps 75 - 116 ]

Tom Baker - Tom Baker played the Doctor as an enigmatic, mysterious and profoundly witty character - an intellectual in a floppy hat and that famous scarf. Tom Baker played the Doctor from 1974 to 1981. He completed 41 stories (172 episodes).
 

Peter Davison as Doctor #5 [ eps 117 - 135 ]

Peter Davison - Peter Davison's Doctor was inherently brave with an air of vulnerability, he put the lives of others before his own at all times. Peter Davison played the Doctor from 1982 to 1984. He completed 20 stories (69 episodes).
 

Colin Baker as Doctor #6 [ eps 136 - 146 ]

Colin Baker - Colin Baker was a larger than life character, ebullient and colourful. Assertive and committed when it came to fighting injustice. Colin Baker played the Doctor from 1984 to 1986. He completed 8 stories (31 episodes).

Sylvester McCoy as Doctor #7 [ eps 147 - 158 ]

Sylvester McCoy - Sylvester McCoy's Doctor was a mysterious and elusive character. Almost sinister at times, but never with those he trusted. Sylvester McCoy played the Doctor from 1987 to 1989. He completed 12 stories (42 episodes).
 

Paul McGann - The new Doctor from the recent feature film.

recurring cast:

Carole Ann Ford as Susan

Jacqueline Hill as Barbara Wright

William Russell as Ian Chesterton

Maureen O'Brien as Vicki

Peter Purves as Steven Taylor

Adrienne Hill as Katarina

Jackie Lane as Dorothea 'Dodo' Chaplet

Michael Craze as Ben Jackson

Anneke Wills as Polly

Frazer Hines as James 'Jamie' Robert McCrimmon

Deborah Watling as Victoria Waterfield

Wendy Padbury as Zoe Herriot

Nicholas Courtney as Brigadier Alistair Gordon

 Lethbridge-Stewart

John Levene as Sergeant John Benton

Caroline John as Elizabeth 'Liz' Shaw

Katy Manning as Josephine 'Jo' Grant

Roger Delgado as The Master [ eps 55-67 ]

Peter Pratt as The Master #2 [ ep 88 only ]

Anthony Ainley as The Master [ 116-160

Richard Franklin as Captain Michael Yates

Elisabeth Sladen as Sarah Jane Smith

Ian Marter as Harold 'Harry' Sullivan

Louise Jameson as Leela

John Leeson as the voice of K-9 (#1, #3)

David Brierley as the voice of K-9 (#2)

Mary Tamm as Lady Romanadvoratrelundar 'Romana' I

Lalla Ward as Lady Romanadvoratrelundar 'Romana' II

Matthew Waterhouse as Adric

Sarah Sutton as Nyssa of Traken

Janet Fielding as Tegan Jovanka

Mark Strickson as Vizlor Turlough

Gerald Flood as the Voice of Kamelion

Nicola Bryant as Perpugilliam 'Peri' Brown

Bonnie Langford as Melanie 'Mel' Bush

Sophie Aldred as Dorothy 'Ace'

Terry Molloy as Davros

David Banks as Cyber Leader

Michael Jayston as The Valeyard

Kate O'Mara as The Rani

Tony Selby as Glitz