| Movie | 1991 | L.A. Story | Roland Mackey | |
| Movie | 2021 | Attack of the Hollywood Clichés! | Self - Actor | |
| Movie | 2004 | The Story of an African Farm | Bonaparte Blenkins | |
| Movie | 1994 | Prêt-à-Porter | Cort Romney | |
| Movie | 1995 | Jack & Sarah | Jack | |
| Movie | 1992 | The Player | Tom Oakley | |
| Movie | 2005 | Corpse Bride | Barkis Bittern (voice) | |
| Movie | 1993 | The Age of Innocence | Lawrence "Larry" Lefferts | |
| Movie | 2001 | Gosford Park | George | |
| Movie | 1989 | Warlock | Giles Redferne | |
| Movie | 2000 | The Miracle Maker | John The Baptist (voice) | |
| Movie | 2000 | The Little Vampire | Frederick Sackville-Bagg | |
| Movie | 2007 | Penelope | Franklin Wilhern | |
| Movie | 2008 | Garden of Eden | Colonel Philip Boyle | |
| Movie | 2006 | The Secret Policeman's Ball: The Ball in the Hall | Self | |
| Movie | 2009 | Love Hurts | Ben Bingham | |
| Movie | 1991 | Hudson Hawk | Darwin Mayflower | |
| Movie | 1990 | Mountains of the Moon | Oliphant | |
| Movie | 1987 | Withnail & I | Withnail | |
| Movie | 2021 | Marvel Studios' 2021 Disney+ Day Special | Classic Loki (archive footage) | |
| Movie | 2002 | The Hound of the Baskervilles | Jack Stapleton | |
| Movie | 1994 | Calliope | The Producer | |
| Movie | 1999 | The Match | Gorgeous Gus | |
| Movie | 2021 | An Audience with Adele | Self | |
| Movie | 1996 | The Portrait of a Lady | Lord Warburton | |
| Movie | 1989 | How to Get Ahead in Advertising | Denis Dimbleby Bagley | |
| Movie | 1996 | An Evening with Lily Savage | Self - Audience Member | |
| Movie | 1996 | Twelfth Night | Sir Andrew Aguecheek | |
| Movie | 1999 | A Christmas Carol | Bob Cratchit | |
| Movie | 2003 | Monsieur N. | Hudson Lowe | |
| Movie | 2011 | Horrid Henry: The Movie | Vic Van Wrinkle | |
| Movie | 1993 | Franz Kafka's It's a Wonderful Life | Franz Kafka | |
| Movie | 1997 | The Serpent's Kiss | James Fitzmaurice | |
| Movie | 1996 | The Cold Light of Day | Viktor Marek | |
| Movie | 1990 | Henry & June | Hugo Guiler | |
| Movie | 1998 | St. Ives | Major Farquhar Chevening | |
| Movie | 2011 | Foster | Mr. Potts | |
| Movie | 2023 | The Coronation Concert | Self | |
| Movie | 2011 | The Last Fashion Show | Federico Marinoni | |
| Movie | 1997 | Keep the Aspidistra Flying | Gordon Comstock | |
| Movie | 2020 | Groundhog Dave 2 | Groundhog Dave (voice) | |
| Movie | 2010 | Jackboots on Whitehall | The Vicar (voice) | |
| Movie | 2019 | The Space: Theatre of Survival | as Self | |
| Movie | 2011 | How to Stop Being a Loser | Ian | |
| Movie | 2001 | Hildegarde | Wolf | |
| Movie | 2012 | Zambezia | Cecil (voice) | |
| Movie | 1999 | Withnail and Us | Self | |
| Movie | 2019 | Master Moley by Royal Invitation | The Gardener (voice) | |
| Movie | 1999 | The Peculiar Memories of Bruce Robinson | Self | |
| Movie | 1995 | Empire of the Censors | Self - Host | |
| Movie | 2013 | Dom Hemingway | Dickie Black | |
| Movie | 1999 | I Demand to Have Some Booze! | Self | |
| Movie | 2013 | Khumba | Bradley (voice) | |
| Movie | 1989 | Here Is the News | David Dunhill | |
| Movie | 2010 | First Night | Adam | |
| Movie | 2002 | Robert Altman in England | Himself | |
| Movie | 2023 | The Lesson | J.M. Sinclair | |
| Movie | 2015 | Queen & Country | Major Cross | |
| Movie | 2022 | A Royal Grand Design | Host | |
| Movie | 2025 | Death of a Unicorn | Odell | |
| Movie | 2006 | Above and Beyond | | |
| Movie | 2012 | For No Good Reason | Self | |
| Movie | 2023 | Saltburn | Sir James Catton | |
| Movie | 2014 | Dirty Weekenders in France | Self - Presenter | |
| Movie | 1992 | The Other Side | Sherlock Holmes | |
| Movie | 1989 | Killing Dad (Or How to Love Your Mother) | Berg | |
| Movie | 1994 | Hard Times | James Harthouse | |
| Movie | 1993 | The Legends of Treasure Island | Long John Silver (voice) | |
| Movie | N/A | Wildwood | (voice) | |
| Movie | 1996 | Vem Var Dracula | Self | |
| Movie | 2012 | Words of the Titanic | Reader | |
| Movie | 2024 | Argylle | Director Fowler | |
| Movie | 2015 | The Gospel of Luke | Narrator (voice) – New International Version | |
| Movie | 1986 | Honest Decent & True | Moonee Livingstone | |
| Movie | 2025 | Nuremberg | Sir David Maxwell-Fyfe | |
| Movie | 2015 | Teeth | | |
| Movie | 2010 | The Man Who Married Himself | Olivier | |
| Movie | N/A | Savage House | Sir Chauncey Savage | |
| Movie | 2002 | Sherlock: Case of Evil | Mycroft | |
| Movie | 1999 | Doctor Who: The Curse of Fatal Death | The Quite Handsome Doctor | |
| Movie | 1997 | A Royal Scandal | George, Prince of Wales | |
| Movie | 1997 | Treasure Island | Long John Silver | |
| Movie | 2012 | Doctor Who: The Snowmen | Dr. Walter Simeon | |
| Movie | 2003 | Bright Young Things | Father Rothschild | |
| Movie | 2010 | Cuckoo | Professor Julius Greengrass | |
| Movie | 2000 | Victoria Wood with All the Trimmings | Various Characters | |
| Movie | N/A | The Queen of Fashion | Evelyn Delves Broughton | |
| Movie | N/A | Wittgenstein's Poker | Ludwig Wittgenstein (voice) | |
| Movie | 1997 | Spice World | Clifford | |
| Movie | 2008 | Filth and Wisdom | Prof Flynn | |
| Movie | 2015 | The Secret World of Lewis Carroll | Himself - Actor | |
| Movie | 2025 | The Thursday Murder Club | Bobby Tanner | |
| Movie | 2017 | Logan | Dr. Rice | |
| Movie | 2007 | Always Crashing in the Same Car | James Booth | |
| Movie | 2011 | The Iron Lady | Michael Heseltine | |
| Movie | 2017 | Their Finest | Roger Swain | |
| Movie | 1997 | An Audience with Elton John | Self | |
| Movie | 1993 | Suddenly, Last Summer | George Holly | |
| Movie | 2016 | Jackie | Bill Walton | |
| Movie | 1987 | Hidden City | Brewster | |
| Movie | 2001 | Strictly Sinatra | Himself | |
| Movie | 2016 | The Last Dragonslayer | Dragon (voice) | |
| Movie | 2010 | The Nutcracker | Father | |
| Movie | 2017 | The Hitman's Bodyguard | Seifert | |
| Movie | 2005 | Colour Me Kubrick | Jasper | |
| Movie | 1997 | Portrait: Jane Campion and The Portrait of a Lady | Self | |
| Movie | 2018 | Can You Ever Forgive Me? | Jack Hock | |
| Movie | 2018 | The Nutcracker and the Four Realms | Shiver | |
| Movie | 1997 | Food of Love | Alex Salmon | |
| Movie | 1993 | Innocence and Experience: The Making of 'The Age of Innocence' | Self | |
| Movie | 1998 | Cash in Hand | Sir Harry Parkins | |
| Movie | 2019 | Star Wars: The Rise of Skywalker | Allegiant General Pryde | |
| Movie | 2013 | About Time | Lawyer in Play (uncredited) | |
| Movie | 2015 | Wellington: The Iron Duke Unmasked | The Duke of Wellington | |
| Movie | 1988 | Codename: Kyril | Laurence Sculby | |
| Movie | 2021 | Hitman's Wife's Bodyguard | Seifert | |
| Movie | 2013 | Hello: A Portrait Of Leslie Phillips | Self / Larry Oliphant | |
| Movie | 2019 | An Accidental Studio | Self | |
| Movie | 2005 | The Story of ‘Fairytale of New York’ | Narrator | |
| Movie | 2019 | 7 Up & Me | Self | |
| Movie | 1994 | Pink Floyd: The Story | Narrator (voice) | |
| Movie | 2021 | Everybody's Talking About Jamie | Hugo Battersby / Loco Chanelle | |
| Movie | 2012 | Kath & Kimderella | Alain the Page | |
| Movie | 2012 | Cherrywood Cannon | (Voice) | |
| Movie | 2006 | Pulp: The Story of Common People | Narrator | |
| Movie | 2019 | Palm Beach | Billy | |
| Movie | 2020 | The Skywalker Legacy | Self | |
| Movie | 1992 | Bram Stoker's Dracula | Dr. Jack Seward | |
| Movie | 2020 | Ben Platt: Live from Radio City Music Hall | Self | |
| Movie | 1989 | Thieves in the Night | Joseph | |
| Movie | 2012 | The Wildebeest Migration: Nature's Greatest Journey | Narrator | |
| Movie | 2006 | Garfield: A Tail of Two Kitties | Preston (voice) | |
| Movie | 2021 | Robin Robin | Magpie (voice) | |
| Movie | 2007 | The Blood Is the Life: The Making of 'Bram Stoker's Dracula' | Self (archive footage) | |
| Movie | 2002 | The Making of Gosford Park | Self | |
| Movie | 1994 | Butter | Gerrard | |
| Movie | 2021 | The Spine of Night | The Guardian (voice) | |
| Movie | 2004 | The Story of Bohemian Rhapsody | Narrator (voice) | |
| Movie | 2021 | Agatha & Poirot: Partners in Crime | Self - Host | |
| Movie | 2022 | Persuasion | Sir Walter Elliot | |
| Movie | N/A | Fado! | | |
| Movie | N/A | The Honey Wars | (voice) | |
| Movie | N/A | Ladies First | | |
| Movie | 2025 | 100 Nights of Hero | Birdman | |
| Movie | 2024 | Doctor Who at the Proms | The Doctor (archive footage) | |
| Movie | 2004 | Tooth | Jarvis Jarvis | |
| Movie | 2017 | Making 'Logan' | Self | |
| Movie | 2007 | Elementary My Dear Viewer | Self - Presenter | |
| Movie | N/A | Rose's Baby | | |
| Movie | 2009 | Victoria Wood: Seen on TV | | |
| Movie | 1995 | Bed | Nurse/Bed Head | |
| Movie | N/A | Merry Christmas Aubrey Flint | Mr. Hopkins | |
| TV Show | 1999 | The Scarlet Pimpernel | Percy Blakeney/The Scarlet Pimpernel | 6 |
| TV Show | 1993 | Shooting Stars | Self | 1 |
| TV Show | 1997 | Captain Star | | 13 |
| TV Show | 1995 | Soccer AM | Self | 2 |
| TV Show | 1999 | Let Them Eat Cake | | 1 |
| TV Show | 2006 | The One Show | Self - Guest | 1 |
| TV Show | 2005 | The Friday Night Project | Self | 1 |
| TV Show | 1994 | Room 101 | Self | 1 |
| TV Show | 1996 | Dalziel & Pascoe | | 1 |
| TV Show | 1996 | Karaoke | Nick Balmer | 4 |
| TV Show | 1992 | Absolutely Fabulous | Dream Justin | 1 |
| TV Show | 2003 | Posh Nosh | Simon Marchmont | 9 |
| TV Show | 1997 | Trial & Retribution | | 2 |
| TV Show | 1959 | No Hiding Place | | 1 |
| TV Show | 1993 | The Legends of Treasure Island | Long John Silver (voice) | 26 |
| TV Show | 1998 | The Heaven and Earth Show | | 1 |
| TV Show | 1983 | Natural World | | 1 |
| TV Show | 2004 | 90 Days in Hollywood | | 13 |
| TV Show | 1987 | Lizzie's Pictures | | 4 |
| TV Show | 1984 | Aspel & Company | | 1 |
| TV Show | 2021 | Loki | Classic Loki | 2 |
| TV Show | 1999 | Home Farm Twins | | 81 |
| TV Show | 2021 | Marvel Studios Assembled | Self - Classic Loki | 1 |
| TV Show | 2002 | Ant & Dec's Saturday Night Takeaway | Self - Guest Announcer | 1 |
| TV Show | 2011 | The Crimson Petal and the White | Doctor Curlew | 4 |
| TV Show | 2005 | Doctor Who | The Great Intelligence | 1 |
| TV Show | 1991 | Performance | Nurse/Bed Head | 1 |
| TV Show | 2010 | Downton Abbey | Simon Bricker | 4 |
| TV Show | 2005 | Doctor Who | Dr Simeon | 1 |
| TV Show | 2021 | Write Around the World with Richard E Grant | Self - Presenter | 3 |
| TV Show | 2012 | Girls | Jasper | 5 |
| TV Show | 2014 | The Kumars | Self | 1 |
| TV Show | 2017 | Tate Britain's Great Art Walks | Self | 1 |
| TV Show | 2012 | The Fear | Seb Whiting | 4 |
| TV Show | 2015 | Jekyll and Hyde | Sir Roger Bulstrode | 10 |
| TV Show | 2007 | Would I Lie to You? | Self | 1 |
| TV Show | 2011 | Game of Thrones | Izembaro | 3 |
| TV Show | 1994 | Hard Times | James Harthouse | 4 |
| TV Show | 2021 | Moley | The Gardener (voice) | 52 |
| TV Show | 1993 | Frasier | Stephen Moon | 1 |
| TV Show | 2003 | Doctor Who: Scream of the Shalka | The Doctor (voice) | 6 |
| TV Show | 1978 | An Audience with... | Self | 1 |
| TV Show | 1990 | Rab C. Nesbitt | Chingford Steel | 1 |
| TV Show | 2022 | Suspect | Harry | 8 |
| TV Show | 2020 | Between the Covers | Self | 1 |
| TV Show | 2015 | Dig | Ian Margrove | 10 |
| TV Show | 2012 | Gadget Man | | 1 |
| TV Show | 2003 | QI | Self | 1 |
| TV Show | 2022 | Ant & Dec's Limitless Win | Self | 1 |
| TV Show | 2014 | Late Night with Seth Meyers | Self | 1 |
| TV Show | 2015 | Close Up with The Hollywood Reporter | Self | 1 |
| TV Show | 2025 | Too Much | Jonno Ratigan | 10 |
| TV Show | 2022 | RuPaul's Drag Race UK vs The World | Self - Guest Judge | 1 |
| TV Show | 2006 | Above and Beyond | Don Bennett | 2 |
| TV Show | 2020 | Michael McIntyre's The Wheel | Self - Expert | 1 |
| TV Show | 2020 | Dispatches from Elsewhere | Octavio | 10 |
| TV Show | 2022 | Frankly | Self | 1 |
| TV Show | 2004 | Agatha Christie's Marple | Raymond West | 1 |
| TV Show | 2007 | The Graham Norton Show | Self | 2 |
| TV Show | 2005 | 8 Out of 10 Cats | Self | 1 |
| TV Show | 2021 | The Outlaws | The Earl | 4 |
| TV Show | 2017 | A Series of Unfortunate Events | Man with Beard But No Hair | 3 |
| TV Show | 2024 | Nautilus | The White Rajah | 2 |
| TV Show | 2018 | Hang Ups | Leonard Conrad | 3 |
| TV Show | 1989 | The Simpsons | British Voice / Julian (voice) | 1 |
| TV Show | 2024 | The Franchise | Peter Fairchild | 8 |
| TV Show | 1998 | Parkinson | Self | 1 |
| TV Show | 1990 | Have I Got News for You | Self | 1 |
| TV Show | 1996 | Cold Lazarus | Nick Balmer | 4 |
| TV Show | 2006 | The One Show | Self | 1 |
| TV Show | 1967 | Omnibus | Narrator (voice) | 1 |
| TV Show | 1991 | Performance | George Holly | 1 |
| TV Show | 1988 | Codename: Kyril | Sculby | 2 |
