Credits

• 2024 · Moonflower Murders as Frank Parris / Oscar Berlin
• 2024 · Time Bandits as Earl of Sandwich
• 2024 · Time Bandits as Earl of Sandwich (voice)
• 2024 · 3 Body Problem as Isaac Newton
• 2024 · National Theatre Live: The Motive and the Cue as Sir John Gielgud
• 2023 · The Hound of the Baskervilles as Sherlock Holmes
• 2023 · Hammer A.D. 2023 as Self
• 2023 · Mission: Impossible - Dead Reckoning Part One as NSA
• 2023 · Nolly as Larry Grayson
• 2022 · A Christmas Carol: A Ghost Story as Jacob Marley
• 2022 · Peter Davison: Uncut! as
• 2022 · Inside Classical as Sherlock Holmes
• 2022 · The Road Dance as Doctor Maclean
• 2022 · Operation Mincemeat as Ivor Montazac
• 2021 · The Amazing Mr. Blunden as Mr. Wickens
• 2021 · Memento Mori as Henry Huxley
• 2021 · The Sparks Brothers as Self
• 2021 · A Silent Imprisonment as Mr Murphy
• 2021 · Locked Down as Donald
• 2020 · The Father as The Man
• 2020 · Cold War Steve Meets the Outside World as Self
• 2020 · Scandal & Beauty: Mark Gatiss on Aubrey Beardsley as Himself
• 2020 · In Search of Dracula as Himself - Presenter
• 2020 · Dracula as Frank Renfield
• 2019 · Doctor Who and the Third Man as Himself
• 2019 · Good Omens as Mr. Harmony
• 2019 · Brexit: The Uncivil War as Peter Mandelson (voice)
• 2018 · The Dead Room as Radio Announcer (voice)
• 2018 · The Favourite as Lord Marlborough
• 2018 · National Theatre Live: The Madness of George III as George III
• 2018 · The League of Gentlemen - Live Again! as Various Characters
• 2018 · Mark Gatiss on John Minton: The Lost Man of British Art as Himself - Presenter
• 2018 · Christopher Robin as Giles Winslow
• 2018 · The Mercy as Ronald Hall
• 2017 · Doctor Who: Twice Upon a Time as The Captain
• 2017 · Gunpowder as Sir Robert Cecil
• 2017 · Mars: a Traveller's Guide as Narrator
• 2017 · Against the Law as Dr. Landers
• 2017 · Taboo as Prince Regent
• 2016 · Denial as Professor Robert Jan van der Pelt
• 2016 · Absolutely Fabulous: The Movie as Joel
• 2016 · Our Kind of Traitor as Billy Matlock
• 2016 · Dad's Army as Colonel Theakes
• 2016 · Mark Gatiss: A Study in Sherlock as Himself
• 2016 · Sherlock: The Abominable Bride as Mycroft Holmes
• 2015 · Victor Frankenstein as Dettweiler
• 2015 · London Spy as Rich
• 2015 · Premium Bond with Mark Gatiss and Matthew Sweet as Himself
• 2015 · The Vote as Steven Crosswell
• 2015 · Release the Hound! as Self
• 2015 · Thunderbirds Are Go! as Dr. Quentin Questa (voice)
• 2015 · Coalition as Peter Mandelson
• 2015 · Wolf Hall as Stephen Gardiner
• 2014 · Mapp and Lucia as Major Benjamin 'Benjy' Flint
• 2014 · Doctor Who Extra as Self
• 2014 · The Real History of Science Fiction as Himself - Narrator (voice)
• 2014 · Inside No. 9 as Callum
• 2014 · Inside No. 9 as Self
• 2014 · Unlocking Sherlock as Himself / Mark Gatiss
• 2013 · M.R James: Ghost Writer as Presenter
• 2013 · Doctor Who Live: The Next Doctor as Self
• 2012 · Horror Europa with Mark Gatiss as Self - Host
• 2012 · The Real Sherlock Holmes as Self
• 2011 · Cleaning Up as Mr Jackson
• 2011 · Game of Thrones as Tycho Nestoris
• 2011 · The Crimson Petal and the White as Henry Rackham Junior
• 2010 · Mid Morning Matters with Alan Partridge as
• 2010 · A History of Horror as Self - Presenter
• 2010 · Unlocking Sherlock as Himself
• 2010 · Sherlock as Mycroft Holmes
• 2010 · Sherlock as Self
• 2010 · Sherlock as Self / Mycroft Holmes
• 2009 · Ghosts in the Machine as Himself
• 2009 · Doctor Who Greatest Moments as Self
• 2009 · Psychoville as
• 2009 · Horrible Histories as
• 2009 · New Town as Duff Purves
• 2009 · Being Human as Mr. Snow
• 2008 · Crooked House as The Curator
• 2008 · Only Connect as Self - Contestant
• 2008 · Sense and Sensibility as John Dashwood
• 2007 · Jekyll as Robert Louis Stevenson
• 2007 · The Worst Journey in the World as Apsley Cherry-Garrard
• 2007 · Grindhouse as (segment "Don't") (uncredited)
• 2007 · Don't as Roddy McDowel
• 2006 · The Wind in the Willows as Rat
• 2006 · The League of Gentlemen Are Behind You as Hilary Briss / Mickey Michaels / Val Denton / Les McQueen / Lance Longthorne / Alvin Steele / Phil Proctor / Mrs Beasley / Mick McNamara / Neds / Lotte Lipp / Brian Morgan / Dr Chinnery / Iris Krell / Bobbin
• 2006 · The League of Gentlemen Are Behind You! as
• 2006 · The League of Gentlemen Are Behind You! as
• 2006 · Fear of Fanny as Johnnie Cradock
• 2006 · Starter for 10 as Bamber Gascoigne
• 2006 · Free Jimmy as Jakki (voice)
• 2005 · Match Point as Ping-Pong Player
• 2005 · Funland as
• 2005 · Wallace & Gromit: The Curse of the Were-Rabbit as Miss Blight (voice)
• 2005 · Don't Crash: The Documentary of the Making of the Movie of the Book of the Radio Series of 'The Hitchhiker's Guide to the Galaxy' as Self - The League of Gentlemen
• 2005 · The League of Gentlemen's Apocalypse as Various Characters
• 2005 · The Hitchhiker's Guide to the Galaxy as Additional Vogon Voices
• 2005 · Doctor Who as Gantok
• 2005 · Doctor Who as Richard Lazarus
• 2005 · Doctor Who as The Captain
• 2005 · Doctor Who Confidential as
• 2005 · Doctor Who Confidential as Narrator
• 2004 · Agatha Christie's Marple as Ronald Hawes
• 2004 · Who Do You Think You Are? as Self
• 2004 · Global Conspiracy? as Terry Scanlon
• 2004 · Shaun of the Dead as Radio Presenter With 'Spaceship' Theory / Wildlife voiceover (voice) (uncredited)
• 2004 · Sex Lives of the Potato Men as Jeremy
• 2004 · Nighty Night as
• 2004 · Nighty Night as Glenn Bulb
• 2003 · The Kneale Tapes as Self
• 2003 · Bright Young Things as House Agent
• 2003 · Little Britain as
• 2003 · QI as Self
• 2002 · Robbie the Reindeer: Legend of the Lost Tribe as Viking (voice)
• 2002 · Footballers' Wives as Teddy - Agent
• 2001 · The League of Gentlemen: Live at Drury Lane as various
• 2001 · Dr. Terrible's House of Horrible as Hang Man Chang
• 2001 · Friday Night with Jonathan Ross as Self
• 2001 · Birthday Girl as Porter
• 2000 · Randall & Hopkirk (Deceased) as
• 1999 · Spaced as Agent
• 1999 · The League of Gentlemen as
• 1997 · Midsomer Murders as Rev Giles Shawcross
• 1994 · The Dwelling Place as Bowmer
• 1993 · Harry as Diner Manager
• Future · Bookish as Gabriel Book
• 2020 · Tales of the Uncanny as Self
• 2014 · 50 Years of BBC Two Comedy as Self
• 2014 · National Theatre Live: Coriolanus as Menenius Agrippa
• 2013 · Dr. Forever! as Himself
• 2012 · Doctor Who: The Great Detective as Narrator
• 2012 · Back to Black: The Making of Dracula Prince of Darkness as Self - Actor and Writer
• 2010 · The First Men in the Moon as Cavor
• 2010 · Worried About the Boy as Malcolm McLaren
• 2009 · Spanish Flu: The Forgotten Fallen as Ernest Dunks
• 2008 · Clone as Colonel Black
• 2007 · Consenting Adults as PC Butcher
• 2007 · Derren Brown: Trick or Treat as Himself
• 2005 · Return of the Goodies as Himself
• 2005 · The Quatermass Experiment as John Paterson
• 2005 · Doctor Who: A New Dimension as Self
• 2004 · Agatha Christie: A Life in Pictures as Kenyon
• 2004 · Spaced: Skip to the End as Self
• 2004 · Catterick as Peter
• 2002 · Surrealissimo: The Trial of Salvador Dali as Louis Aragon
• 2002 · The Cicerones as John Trant
• 2001 · The League of Gentlemen: Live at Drury Lane as Various
• 2000 · The League of Gentlemen - Yule Never Leave! as
• 1999 · The Pitch of Fear as Mr. Borusa
• 1999 · The Web of Caves as The Doctor
• 1999 · The Kidnappers as Mark
• 1998 · In the Red as Junior Detective
• 1998 · This Morning with Richard Not Judy as
• 1997 · Stranger Than Fiction 3: Acting Up as
• 1996 · Unnatural Selection as Mr. Emerson
• 1996 · Bidding Adieu: A Video Diary as Self - Interviewer
• 1995 · The Devil of Winterborne as Georgie
• Future · Highgate House of Horror as
• 1995 · Stranger than Fiction 2: From Script to Screen as
• 1994 · The Zero Imperative as Dr. William Bruffin
• 1989 · Agatha Christie's Poirot as Leonard Boynton