Atuação

• 1972
  The Moonstonecomo John Herncastle
• 1975
  Drive Carefully, Darlingcomo Brain
• 1981
  Dangerous Davies: The Last Detectivecomo William Lind
• 1983
  Doctor Who: Arc of Infinitycomo Commander Maxil
• 1984
  Doctor Who: The Twin Dilemmacomo The DoctorDoctor Who: The Caves of Androzanicomo Sixth Doctor
• 1985
  Doctor Who: Revelation of the Dalekscomo The DoctorDoctor Who: Timelashcomo The DoctorDoctor Who: The Two Doctorscomo The DoctorA Fix with Sontaranscomo The DoctorDoctor Who: The Mark of the Ranicomo The DoctorDoctor Who: Vengeance on Varoscomo The DoctorDoctor Who: Attack of the Cybermencomo The Doctor
• 1986
  Doctor Who: The Ultimate Foecomo The DoctorThe PanoptiCon Tapes VIDoctor Who: Terror of the Vervoidscomo The DoctorDoctor Who: Mindwarpcomo The DoctorDoctor Who: The Mysterious Planetcomo The DoctorWho's Who
• 1990
  Myth Makers 19: Colin BakerThe PanoptiCon Tapes VThe PanoptiCon Tapes IVThe PanoptiCon Tapes IIIThe PanoptiCon Tapes IIThe PanoptiCon Tapes
• 1991
  The Stranger: Summoned by Shadowscomo The Stranger
• 1992
  Doctor Who: Cybermen - The Early Yearscomo HostThe Stranger: More Than a Messiahcomo The Stranger
• 1993
  30 Years in the TARDIScomo HimselfDoctor Who: Dimensions in Timecomo The 6th DoctorBigger Inside Than Outcomo NarratorThe Airzone Solutioncomo Arnold DaviesThe Stranger: In Memory Alonecomo The Stranger
• 1994
  The Stranger: Breach of the Peacecomo The Stranger / SolomanDoctor Who: The Colin Baker Yearscomo HimselfThe Zero Imperativecomo Peter RussellThe Stranger: The Terror Gamecomo The Stranger / SolomanStranger than Fiction
• 1995
  The Doctors: 30 Years of Time Travel and BeyondThe Stranger: Eye of the Beholdercomo The Stranger / SolomanStranger than Fiction 2: From Script to Screen
• 1997
  Stranger Than Fiction 3: Acting Up
• 1999
  Adventures in Space and Timecomo HimselfCarnival of MonstersThe Waiting Timecomo Giles FlemingThe Adventures of Young Indiana Jones: Daredevils of the Desertcomo ChauvelDie HarfenspielerinSoul's Arkcomo Galico
• 2000
  TravelWisecomo Jonathan PikeThe Asylumcomo Arbuthnot
• 2001
  The Home Whovian
• 2002
  Doctor Who: Real Timecomo The Doctor
• 2003
  The Story of Doctor Who
• 2005
  Doctor Who: A New Dimensioncomo ele próprio
• 2006
  Built for War: The Sontaran Story
• 2007
  Davros Connectionscomo (archival audio)
• 2008
  Doctor Who: O Próximo Doutorcomo The Doctor (6) (imagens de arquivo)Trials and TribulationsThe Making of The Trial of a Time LordCelebration: Doctor Who in 1983The Ties That Bind Uscomo The Sixth Doctor / Commander Maxil (imagens de arquivo)
• 2013
  Doctor Who Live: The Afterpartycomo ele próprioThe Five(ish) Doctors Rebootcomo ele próprioDoctor Who: O Dia do Doutorcomo The Doctor (6) (imagens de arquivo)Doctor Who: Tales from the TARDIScomo ele próprioDoctor Who Live: The Next Doctorcomo ele próprio
• 2014
  Shadows of a Strangercomo William FallonDoctor Who: The Ultimate Companioncomo ele próprio / The Doctor (imagens de arquivo)Doctor Who: The Ultimate Time Lord with Peter Davisoncomo ele próprio
• 2015
  Doctor Who: Os Maridos de River Songcomo The Doctor (6) (picture) (sem créditos)A Christmas Carolcomo Charles DickensA Dozen Summerscomo The Narrator
• 2016
  Last Man on Earthcomo Professor James Friedkin
• 2017
  Classic Doctor Who Comic-Con Panelcomo ele próprio
• 2018
  Remembering Deborah Watlingcomo ele próprio
• 2019
  Showman: The Life of John Nathan-Turnercomo HimselfThe Doctor Who Cookbook Revisitedcomo ele próprioThe Doctors: The Colin Baker YearsDoctor Who: The Trialcomo ele próprio
• 2021
  A Casa Mal-Assombradacomo Charles SuttonRealidades Paralelascomo Conrad
• 2022
  The Callercomo DS Rawlins (voz)
• 2023
  Doctor Who: 60 Years of Secrets & Scandalscomo ele próprio - archiveChristmas at the Holly Day Inncomo BenTalking Doctor Whocomo ele próprio / The Doctor (6) (imagens de arquivo)Buckle Upcomo NickSecrets of a Wallaby Boycomo Bruce (voz)
• 2024
  Doctor Who at the Promscomo The Doctor (6) (imagens de arquivo)
• 2025
  Doctor Who: Wish World & The Reality Warcomo The Doctor (imagens de arquivo) (sem créditos)