Acting

2023		Doctor Who: 60 Years of Secrets & Scandals as Self - archive
2023		Christmas at the Holly Day Inn as Ben
2023		Talking Doctor Who as Self / The Doctor (6) (archive footage)
2023		Buckle Up as Nick
2023		Secrets of a Wallaby Boy as Bruce (voice)

2022		Doctor Who: The Power of the Doctor as The Doctor (6)
2022		The Caller as DS Rawlins (voice)

2021		The Ghosts of Borley Rectory as Charles Sutton
2021		You Might Get Lost as Conrad

2019		Showman: The Life of John Nathan-Turner as Himself
2019		The Doctor Who Cookbook Revisited as Self
2019		The Doctors: The Colin Baker Years
2019		Doctor Who: The Trial as Self

2018

as Self

2016

as Professor James Friedkin

2015		A Christmas Carol as Charles Dickens
2015		A Dozen Summers as The Narrator

2014		Shadows of a Stranger as William Fallon
2014		Doctor Who: The Ultimate Companion as Self / The Doctor (archive footage)
2014		Doctor Who: The Ultimate Time Lord with Peter Davison as Self

2013		Doctor Who Live: The Afterparty as Self
2013		Doctor Who: The Day of the Doctor as The Doctor (6) (archive footage)
2013		The Five(ish) Doctors Reboot as Himself
2013		Doctor Who Live: The Next Doctor as Himself

2008		Trials and Tribulations
2008		The Making of The Trial of a Time Lord
2008		Celebration: Doctor Who in 1983

2007

as (archival audio)

2006

2003

2001

2000		TravelWise as Jonathan Pike
2000		The Asylum as Arbuthnot

1999		The Adventures of Young Indiana Jones: Daredevils of the Desert as Chauvel
1999		Carnival of Monsters
1999		Adventures in Space and Time as Himself
1999		The Waiting Time as Giles Fleming
1999		The Harpist
1999		Soul's Ark

1997

1995		The Doctors: 30 Years of Time Travel and Beyond
1995		The Stranger: Eye of the Beholder as The Stranger / Soloman
1995		Stranger than Fiction 2: From Script to Screen

1994		The Stranger: Breach of the Peace as The Stranger / Soloman
1994		Doctor Who: The Colin Baker Years
1994		Stranger than Fiction
1994		The Stranger: The Terror Game as The Stranger / Soloman
1994		The Zero Imperative as Peter Russell

1993		30 Years in the TARDIS as Himself
1993		Doctor Who: Dimensions in Time as The 6th Doctor
1993		The Stranger: In Memory Alone as The Stranger
1993		The Airzone Solution as Arnold Davies

1992

as The Stranger

1991

as The Stranger

1990		Myth Makers 19: Colin Baker
1990		The PanoptiCon Tapes V
1990		The PanoptiCon Tapes IV
1990		The PanoptiCon Tapes III
1990		The PanoptiCon Tapes II
1990		The PanoptiCon Tapes

1986		Doctor Who: The Ultimate Foe as The Doctor
1986		The PanoptiCon Tapes VI
1986		Doctor Who: Terror of the Vervoids as The Doctor
1986		Doctor Who: Mindwarp as The Doctor
1986		Doctor Who: The Mysterious Planet as The Doctor
1986		Who's Who

1985		Doctor Who: Revelation of the Daleks as The Doctor
1985		Doctor Who: Timelash as The Doctor
1985		Doctor Who: The Two Doctors as The Doctor
1985		Doctor Who: The Mark of the Rani as The Doctor
1985		Doctor Who: Vengeance on Varos as The Doctor
1985		Doctor Who: Attack of the Cybermen as The Doctor

1984		Doctor Who: The Twin Dilemma as The Doctor
1984		Doctor Who: The Caves of Androzani as Sixth Doctor

1983

as Commander Maxil

1981

as William Lind

1975

as Brain

1972

as John Herncastle