Peter Davison

Character: The Doctor

Sarah Sutton

Character: Nyssa

Janet Fielding

Character: Tegan Jovanka

Mark Strickson

Character: Vislor Turlough

Nicholas Courtney

Character: Brigadier Alistair Gordon Lethbridge-Stewart

Valentine Dyall

Character: The Black Guardian

David Collings

Character: Mawdryn

Angus MacKay

Character: Headmaster

Stephen Garlick

Character: Ibbotson

Roger Hammond

Character: Dr. Runciman

Sheila Gill

Character: Matron

Peter Walmsley

Character: Mutant

Brian Darnley

Character: Mutant

William Hartnell

Character: The Doctor (1) (archive footage)

Patrick Troughton

Character: The Doctor (2) (archive footage)

Jon Pertwee

Character: The Doctor (3) (archive footage)

Tom Baker

Character: The Doctor (4) (archive footage)

Roger Delgado

Character: The Master (archive footage) (Special Edition)

Michael Kilgarriff

Character: K1 Robot (archive footage)

Stanley Mason

Character: Bok (archive footage) (Special Edition)

Stephen Thorne

Character: Omega (archive footage) (Special Edition)

John Woodnutt

Character: Duke of Forgill/Broton (archive footage) (Special Edition)