Filmography96 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2026 | The Man with the PlanMovie | William Beveridge | 77 |
| 2024 | AguskaMovie | Patrick Carter | 75 |
| 2023 | Surprised by OxfordMovie | Dr. Sterling | 74 |
| 2022 | Marvel Studios Assembled: The Making of HawkeyeMovie | — | 73 |
| 2022 | Judi Dench: Our National TreasureMovie | Narrator | 73 |
| 2022 | The Marvellous Maggie Smith: A CelebrationMovie | Self | 73 |
| 2021 | HawkeyeSeries | Armand Duquesne III | 72 |
| 2021 | The Amazing Mr. BlundenMovie | Mr. Blunden | 72 |
| 2021 | The CleanerSeries | Mr. Abahassine | 72 |
| 2019 | The WitcherSeries | Codringher | 70 |
| 2018 | They'll Love Me When I'm DeadMovie | Self | 69 |
| 2018 | Blue IguanaMovie | Uncle Martin | 69 |
| 2017 | Victoria & AbdulMovie | Mr. Puccini | 68 |
| 2017 | Viceroy's HouseMovie | Cyril Radcliffe | 68 |
| 2017 | The Man Who Invented ChristmasMovie | Leech | 68 |
| 2017 | Grindsploitation 3: Video NastyMovie | — | 68 |
| 2017 | 50 Years LegalMovie | Self | 68 |
| 2017 | Tate Britain's Great Art WalksSeries | Self | 68 |
| 2015 | GalavantSeries | Edwin the Magnificent | 66 |
| 2014 | Inside No. 9Series | Dick | 65 |
| 2014 | Magician: The Astonishing Life and Work of Orson WellesMovie | Self - Actor and Welles' Biographer | 65 |
| 2014 | OutlanderSeries | Duke of Sandringham | 65 |
| 2013 | A Very British Murder with Lucy WorsleySeries | Self | 64 |
| 2013 | The Sarah Millican Television Programme - Best of Series 1-2Movie | Self | 64 |
| 2012 | Playhouse PresentsSeries | Dudley | 63 |
| 2012 | Best Possible Taste: The Kenny Everett StoryMovie | Dickie Attenborough | 63 |
| 2012 | Them From That ThingSeries | Various | 63 |
| 2011 | Death in ParadiseSeries | Larry South | 62 |
| 2011 | Love's KitchenMovie | Guy Witherspoon | 62 |
| 2011 | IceMovie | Prime Minister | 62 |
| 2011 | IceSeries | Prime Minister | 62 |
| 2010 | The Unforgettable Harry SecombeMovie | Self | 61 |
| 2010 | Arn: The Knight TemplarSeries | Fader Henry | 61 |
| 2008 | Q&ASeries | Self - Panellist | 59 |
| 2007 | The Sarah Jane AdventuresSeries | Tree Blathereen (voice) | 58 |
| 2007 | The CompanySeries | MI6 liaison officer Elihu | 58 |
| 2007 | Arn: The Knight TemplarMovie | Father Henry | 58 |
| 2007 | LewisSeries | Vernon Oxe | 58 |
| 2006 | The Curse of King Tut's TombMovie | George Russell | 57 |
| 2006 | Great British MenuSeries | Self - Guest Judge | 57 |
| 2006 | The Madness of Boy GeorgeMovie | Narrator (voice) | 57 |
| 2005 | Doctor WhoSeries | Charles Dickens | 56 |
| 2005 | Ripley Under GroundMovie | Dean Bentliffe | 56 |
| 2005 | Rag TaleMovie | Cormac Rourke | 56 |
| 2005 | Revisiting BridesheadMovie | Narrator | 56 |
| 2005 | A Tribute To Ismail MerchantMovie | Self (archive footage) | 56 |
| 2004 | Agatha Christie's MarpleSeries | Colonel Melchett | 55 |
| 2004 | George and the DragonMovie | King Edgar | 55 |
| 2004 | Shoebox ZooSeries | Wolfgang the Wolf (voice) / Hunter the Horse (voice) | 55 |
| 2004 | The Phantom of the OperaMovie | Andre | 55 |
| 2003 | Angels in AmericaSeries | Prior Walter Ancestor #2 (uncredited) | 54 |
| 2003 | Bright Young ThingsMovie | King of Anatolia | 54 |
| 2002 | Hans Christian Andersen: My Life as a FairytaleSeries | Charles Dickens | 53 |
| 2001 | Christmas Carol: The MovieMovie | Charles Dickens / Ebenezer Scrooge (voice) | 52 |
| 2001 | No Man's LandMovie | Colonel Soft | 52 |
| 2000 | Animated Epics: Don QuixoteMovie | Don Quixote | 51 |
| 1999 | Notting HillMovie | Simon Callow (uncredited) | 50 |
| 1999 | Loose WomenSeries | Self | 50 |
| 1998 | Shakespeare in LoveMovie | Tilney | 49 |
| 1998 | ParkinsonSeries | Self | 49 |
| 1997 | Midsomer MurdersSeries | Dr. Wellow | 48 |
| 1996 | Testament: The Bible in AnimationSeries | Meneptah (voice) | 47 |
| 1996 | VictoryMovie | Zangiacomo | 47 |
| 1996 | James and the Giant PeachMovie | Grasshopper (voice) | 47 |
| 1995 | Ace Ventura: When Nature CallsMovie | Vincent Cadby | 46 |
| 1995 | Jefferson in ParisMovie | Richard Cosway | 46 |
| 1994 | Four Weddings and a FuneralMovie | Gareth | 45 |
| 1994 | Street FighterMovie | A. N. Official | 45 |
| 1993 | Soft Top Hard ShoulderMovie | Eddie Cherdowski | 44 |
| 1993 | Femme FataleMovie | Vicar Ronnie | 44 |
| 1992 | Howards EndMovie | Music and Meaning Lecturer (uncredited) | 43 |
| 1991 | PerformanceSeries | John Mortimer | 42 |
| 1990 | Postcards from the EdgeMovie | Simon Asquith | 41 |
| 1990 | Mr. & Mrs. BridgeMovie | Dr. Alex Sauer | 41 |
| 1989 | Agatha Christie's PoirotSeries | Dr. Lutz | 40 |
| 1988 | ManifestoMovie | Police Chief Hunt | 39 |
| 1987 | Inspector MorseSeries | Theodore Kemp | 38 |
| 1987 | MauriceMovie | Mr. Ducie | 38 |
| 1986 | A Room with a ViewMovie | The Reverend Mr. Beebe | 37 |
| 1986 | ScreenPlaySeries | Raimondi | 37 |
| 1986 | Split ScreenSeries | — | 37 |
| 1985 | The Good FatherMovie | Mark Varda | 36 |
| 1985 | Screen TwoSeries | Nathanial Quass | 36 |
| 1984 | AmadeusMovie | Emanuel Schikaneder | 35 |
| 1984 | Chance in a MillionSeries | Tom Chance | 35 |
| 1984 | Royal Variety Performance 1984Movie | — | 35 |
| 1979 | Instant Enlightenment Including VATMovie | Maximillian | 30 |
| 1979 | Question TimeSeries | Himself - Panellist | 30 |
| 1977 | The Sunday DramaSeries | The Prince | 28 |
| 1976 | Victorian ScandalsSeries | Duval | 27 |
| 1975 | The SweeneySeries | Detective Sergeant | 26 |
| 1975 | Carry On LaughingSeries | Crew Member | 26 |
| 1974 | NOVASeries | Galileo | 25 |
| 1971 | A Ghost Story for ChristmasSeries | Aubrey Judd | 22 |
| 1967 | OmnibusSeries | Self | 18 |
| 0 | The Reformation of Sister EdithMovie | Abbot Pentecost | — |