| Movie | 2006 | Pirates of the Caribbean: Dead Man's Chest | Cutler Beckett | |
| Movie | 2007 | Pirates of the Caribbean: At World's End | Cutler Beckett | |
| Movie | 2001 | Enigma | Logie | |
| Movie | 2005 | Pride & Prejudice | Mr. Collins | |
| Movie | 2007 | Elizabeth: The Golden Age | Amyas Paulet | |
| Movie | 2004 | The Libertine | Etherege | |
| Movie | 1998 | The Very Thought of You | Daniel | |
| Movie | 2006 | A Good Year | Charlie Willis | |
| Movie | 2006 | Rabbit Fever | Tod Best | |
| Movie | 1997 | Gobble | Pipsqueak | |
| Movie | 2006 | The Darwin Awards | Henry | |
| Movie | 2009 | The Soloist | Graham Claydon | |
| Movie | 2011 | Hanna | Isaacs | |
| Movie | 2009 | In the Loop | Simon Foster | |
| Movie | 2002 | Lawless Heart | Nick | |
| Movie | 2009 | Gracie! | Monty Banks | |
| Movie | 2013 | About Time | Harry | |
| Movie | 2013 | The Invisible Woman | Wilkie Collins | |
| Movie | 2019 | Mamma Mia! Here We Go Yet Again | Andy Garcia | |
| Movie | 1999 | The Clandestine Marriage | Sir John Ogelby | |
| Movie | 2013 | The Voorman Problem | Mr Voorman | |
| Movie | 2013 | Dr. Easy | Michael | |
| Movie | 1996 | Absolutely Fabulous: The Last Shout | Paolo | |
| Movie | 2021 | The Timekeepers of Eternity | Harker (archive footage) | |
| Movie | 2014 | A Poet in New York | Dylan Thomas | |
| Movie | 2006 | Land of the Blind | Président | |
| Movie | 2014 | The Riot Club | Jeremy Villiers | |
| Movie | 2014 | Muppets Most Wanted | Theater Manager | |
| Movie | 2022 | The Boy, the Mole, the Fox and the Horse | The Mole (voice) | |
| Movie | N/A | Me, You | | |
| Movie | 1996 | Some Mother's Son | Farnsworth | |
| Movie | 2010 | Away We Stay | David | |
| Movie | 2015 | Mission: Impossible - Rogue Nation | Prime Minister | |
| Movie | 2022 | Charlie Mackesy: The Boy, the Mole, the Fox, the Horse and Me | Self | |
| Movie | 2004 | The Hotel In Amsterdam | | |
| Movie | 2001 | Gosford Park | Anthony Meredith | |
| Movie | 2000 | The Announcement | Ben | |
| Movie | 2002 | Possession | Euan | |
| Movie | 1998 | Bedrooms and Hallways | Darren | |
| Movie | 1981 | John Diamond | William Jones | |
| Movie | 2018 | Mowgli: Legend of the Jungle | Tabaqui (voice) | |
| Movie | 2001 | The Life and Adventures of Nicholas Nickleby | Mr. Mantalini | |
| Movie | 2008 | Valkyrie | Colonel Heinz Brandt | |
| Movie | 2017 | Tulip Fever | Dr. Sorgh | |
| Movie | 1994 | Milner | Ben Milner | |
| Movie | 2016 | The Promise | Garin | |
| Movie | 2004 | Paparazzi | Leonard Clark | |
| Movie | 2013 | Byzantium | Kevin Minton (uncredited) | |
| Movie | 2017 | Breathe | Bloggs Blacker / David Blacker | |
| Movie | 2000 | Maybe Baby | Ewan Proclaimer | |
| Movie | 2004 | Stage Beauty | Sir Peter Lely | |
| Movie | 2018 | The Highway Rat | The Squirrel (voice) | |
| Movie | 2004 | Piccadilly Jim | Willie Partridge | |
| Movie | 2018 | A Private War | Sean Ryan | |
| Movie | 2018 | Bohemian Rhapsody | Jim Beach | |
| Movie | 2017 | Revolution: New Art for a New World | Kazimir Malevich (voice) | |
| Movie | 2019 | Holy Lands | Moshe | |
| Movie | 2018 | Bird Box | Gary | |
| Movie | 2021 | The King's Man | King George / Kaiser Wilhelm / Tsar Nicholas | |
| Movie | 2012 | A Liar's Autobiography: The Untrue Story of Monty Python's Graham Chapman | Recording Engineer (voice) | |
| Movie | 1996 | True Blue | Sam Peterson | |
| Movie | 2020 | Cinderella: A Comic Relief Pantomime for Christmas | Baron Hardup | |
| Movie | 2002 | The Making of 'Gosford Park' | Self (uncredited) | |
| Movie | 2021 | Extinct | Charles Darwin (voice) | |
| Movie | 2024 | Absolutely Fabulous: Inside Out | Self | |
| Movie | N/A | The Butler | | |
| TV Show | 2005 | American Dad! | Lincoln (Performance Artist) / Waiter (voice) | 1 |
| TV Show | 2007 | The Company | Adrian Philby | 3 |
| TV Show | 2003 | Cambridge Spies | Guy Burgess | 4 |
| TV Show | 2008 | Headcases | | 8 |
| TV Show | 1999 | Wives and Daughters | Osborne Hamley | 6 |
| TV Show | 2003 | The Lost Prince | King George V | 2 |
| TV Show | 1993 | Harry | Jonathan | 20 |
| TV Show | 2008 | Freezing | | 3 |
| TV Show | 2009 | Desperate Romantics | John Ruskin | 6 |
| TV Show | 2010 | Any Human Heart | Duke Of Windsor | 4 |
| TV Show | 2005 | American Dad! | Mr. Collins / Sherlock Holmes (voice) | 1 |
| TV Show | 2021 | A Tale Dark & Grimm | Mr. Bauer (voice) | 10 |
| TV Show | 1999 | Family Guy | Distinguished Man #2 (voice) | 1 |
| TV Show | 1999 | Family Guy | James Corden (voice) | 1 |
| TV Show | 2022 | Sunday with Laura Kuenssberg | | 1 |
| TV Show | 2010 | Rev. | Adam | 19 |
| TV Show | 2005 | American Dad! | Buck (voice) | 1 |
| TV Show | 2005 | American Dad! | Vulture (voice) | 1 |
| TV Show | 2005 | American Dad! | Dennis (voice) | 1 |
| TV Show | 2005 | American Dad! | Townsperson (voice) | 1 |
| TV Show | 2005 | American Dad! | Working Class Brit (voice) | 2 |
| TV Show | 1999 | Family Guy | Sorting Hat (voice) | 1 |
| TV Show | 2005 | American Dad! | Clifford (voice) | 1 |
| TV Show | 2004 | London | T.S. Eliot | 3 |
| TV Show | 2016 | The Night Manager | Lance Corkoran | 6 |
| TV Show | 2016 | Doctor Thorne | Doctor Thorne | 3 |
| TV Show | 2019 | Harley Quinn | Alfred / Professor Pyg (voice) | 1 |
| TV Show | 2019 | Harley Quinn | Alfred / Waiter (voice) | 1 |
| TV Show | 2019 | Harley Quinn | Alfred Pennyworth / Reporter 3 (voice) | 1 |
| TV Show | 2019 | Harley Quinn | Alfred Pennyworth / Toyman (voice) | 1 |
| TV Show | 1990 | Have I Got News for You | Guest Presenter | 1 |
| TV Show | 2013 | Ambassadors | Prince Mark | 3 |
| TV Show | 2019 | The Kelly Clarkson Show | Self | 1 |
| TV Show | 2008 | John Adams | King George III | 1 |
| TV Show | 2005 | The Thick of It | Cal Richards | 1 |
| TV Show | 2014 | Late Night with Seth Meyers | Self | 1 |
| TV Show | 2019 | Harley Quinn | Alfred / Woke goon (voice) | 1 |
| TV Show | N/A | Have I Got a Bit More News for You | Self - Presenter | 1 |
| TV Show | 2019 | Baptiste | Edward Stratton | 6 |
| TV Show | 2019 | Harley Quinn | Alfred (voice) | 7 |
| TV Show | 2016 | The Real Marigold on Tour | Host (Himself) | 10 |
| TV Show | 2017 | FEUD | Truman Capote | 8 |
| TV Show | 2021 | The White Lotus | Quentin | 7 |
| TV Show | 2016 | Doctor Thorne NA | Doctor Thorne | 4 |
| TV Show | 2015 | The Late Show with Stephen Colbert | Self | 1 |
| TV Show | 2005 | Robot Chicken | Sir Percival/professor X | 1 |
| TV Show | N/A | The Iris Affair | Cameron McIntyre | 1 |
| TV Show | 1999 | Family Guy | Contestant / TV Announcer (voice) | 1 |
| TV Show | 2021 | The Prince | Prince Philip / Prince Charles (voice) | 12 |
| TV Show | 2020 | Us | Douglas Petersen | 4 |
| TV Show | 2022 | The Ipcress File | Major William Dalby | 6 |
| TV Show | 2017 | Taboo | Cholmondeley | 5 |
| TV Show | 2019 | Harley Quinn | Alfred / The Macaroni Man (voice) | 1 |
| TV Show | N/A | The Original Monster | Alfred Hitchcock | 1 |
