| Movie | 2005 | Harry Potter and the Goblet of Fire | Arthur Weasley | |
| Movie | 2007 | Harry Potter and the Order of the Phoenix | Arthur Weasley | |
| Movie | 2009 | Harry Potter and the Half-Blood Prince | Arthur Weasley | |
| Movie | 2001 | High Heels and Low Lifes | Tremaine | |
| Movie | 1997 | The Borrowers | Exterminator Jeff | |
| Movie | 2010 | Harry Potter and the Deathly Hallows: Part 1 | Arthur Weasley | |
| Movie | 2011 | Harry Potter and the Deathly Hallows: Part 2 | Arthur Weasley | |
| Movie | 1989 | Dragon Fight | Ray | |
| Movie | 2022 | Harry Potter 20th Anniversary: Return to Hogwarts | Self | |
| Movie | 2001 | Exit Wounds | Cop | |
| Movie | 2017 | Heidi: Queen of the Mountain | Henry | |
| Movie | 2011 | Frankenstein's Wedding... Live in Leeds | Alphonse Frankenstein | |
| Movie | 2023 | The Effects of Lying | | |
| Movie | 2022 | Super Villans | Self | |
| Movie | 2006 | Viva Blackpool | Tommy Vesty | |
| Movie | 2023 | Surprised by Oxford | Professor Nuttham | |
| Movie | 2025 | Dream Hacker | Edgar Wainwright | |
| Movie | 1988 | Coppers | | |
| Movie | 2005 | A Cock and Bull Story | Ingoldsby | |
| Movie | 2007 | Stardust | Billy | |
| Movie | 2009 | Steve Coogan: The Inside Story | Self | |
| Movie | 2002 | Anita and Me | The Reverend 'Uncle' Alan | |
| Movie | 2011 | When Harry Left Hogwarts | Self | |
| Movie | 2002 | The Final Curtain | Declan Farrell | |
| Movie | 2011 | Albert Nobbs | Sean Casey | |
| Movie | 2024 | Robin and the Hoods | The Mayor | |
| Movie | 1999 | Hunting Venus | Peter | |
| Movie | 2001 | Second Star to the Left | Duke (voice) | |
| Movie | 2007 | A Room with a View | Mr Beebe | |
| Movie | 2016 | Red Top | Police Commissioner Hamish Pritchard | |
| Movie | 2001 | Combat Sheep | Moose (voice) | |
| Movie | 2016 | We're Going on a Bear Hunt | Dad (voice) | |
| Movie | 2000 | Whatever Happened to Harold Smith? | Roland Thornton | |
| Movie | 1988 | Tumbledown | Lumpy | |
| Movie | 2018 | Early Man | Barry (voice) | |
| Movie | 2002 | Harry Potter and the Chamber of Secrets | Arthur Weasley | |
| Movie | 2004 | Harry Potter and the Prisoner of Azkaban | Arthur Weasley | |
| Movie | 1994 | Prince of Jutland | Aslak | |
| Movie | 1994 | Fever | Jukebox Man | |
| Movie | 2011 | 50 Greatest Harry Potter Moments | Arthur Weasley (archive footage) | |
| Movie | 2017 | Harry Potter: A History Of Magic | Himself | |
| Movie | 1998 | Shakespeare in Love | Wabash | |
| Movie | 1996 | 101 Dalmatians | Horace | |
| Movie | 2016 | Golden Years | Phil | |
| Movie | 2004 | Agent Cody Banks 2: Destination London | Inspector Crescent | |
| Movie | 1982 | Privileged | Wilf | |
| Movie | 1998 | The Fast Show Live | | |
| Movie | 1999 | Suit You Sir! The Inside Leg Of The Fast Show | Self | |
| Movie | 2013 | The Look of Love | Follies Director | |
| Movie | 1995 | The Big Game | Tommy Hollis | |
| Movie | 2000 | Happy Birthday Shakespeare | Ted | |
| Movie | 2003 | The Fast Show: The Farewell Tour | Various | |
| Movie | 2002 | Dick Whittington: The ITV Pantomime | King Rat | |
| Movie | N/A | Lead Heads | | |
| Movie | N/A | The Dark Channel | Mabuse | |
| Movie | 2004 | The Heart of Me | Man | |
| Movie | 2006 | Saxondale: On The Road | Self | |
| TV Show | 1994 | The Fast Show | Various Characters | 34 |
| TV Show | 1991 | Bottom | Boris | 1 |
| TV Show | 1988 | Alexei Sayle's Stuff | | 18 |
| TV Show | 1997 | Midsomer Murders | Pat Everett | 1 |
| TV Show | 1993 | The Smell of Reeves and Mortimer | | 12 |
| TV Show | 2000 | Gormenghast | | 4 |
| TV Show | 2004 | Carrie and Barry | | 12 |
| TV Show | 2000 | The Strangerers | Cadet Flynn | 9 |
| TV Show | 2013 | Blandings | Sebastian Beach | 6 |
| TV Show | 2015 | Born Naughty? | Self - Narrator (voice) | 1 |
| TV Show | 2005 | The Rotters' Club | Sam Williams | 3 |
| TV Show | N/A | Mark Williams' Big Bangs | | 4 |
| TV Show | 2002 | Industrial Revelations | | 46 |
| TV Show | 2005 | Doctor Who | Brian Williams | 2 |
| TV Show | 2011 | Fern | | 1 |
| TV Show | 2010 | The Indian Doctor | Richard Sharpe | 5 |
| TV Show | 2013 | Father Brown | Father Brown | 130 |
| TV Show | 2004 | New Tricks | David Beaumont | 1 |
| TV Show | 1989 | KYTV | | 1 |
| TV Show | 1994 | 99-1 | John Samms | 1 |
| TV Show | 1993 | Chef | Policeman 2 | 1 |
| TV Show | 2000 | Gormenghast | Professor Perch | 1 |
| TV Show | 2004 | Hustle | Dale Ridley | 1 |
| TV Show | 1993 | Peak Practice | Roland Grogan | 1 |
| TV Show | 2014 | The Musketeers | Pathologist | 2 |
| TV Show | 2001 | Jumpers for Goalposts | Tommy Stein | 8 |
| TV Show | 2006 | Saxondale | Deggsy | 1 |
| TV Show | 2001 | Fun at the Funeral Parlour | | 1 |
| TV Show | 1986 | Casualty | Des Jones | 1 |
| TV Show | 2001 | Happiness | | 1 |
| TV Show | 1988 | Red Dwarf | Olaf Petersen | 3 |
| TV Show | 2022 | Sister Boniface Mysteries | Father Brown | 1 |
| TV Show | 2010 | Little Crackers | Father Christmas | 1 |
| TV Show | 2008 | Sense and Sensibility | Sir John Middleton | 3 |
| TV Show | 1998 | Comedy Lab | Mr. Anderson | 1 |
| TV Show | 2004 | Mark Williams On The Rails | Self - Presenter | 10 |
| TV Show | 2004 | Agatha Christie's Marple | Commander Peters | 1 |
| TV Show | 2008 | Merlin | The Goblin (voice) | 1 |
| TV Show | 2022 | Here We Go | Frank | 1 |
| TV Show | 2006 | The World's Strangest UFO Stories | Self - Narrator (voice) | 6 |
| TV Show | 1999 | Loose Women | Self | 1 |
| TV Show | 2009 | Being Human | Regus | 2 |
| TV Show | 1964 | Top of the Pops | Self - Host | 1 |
| TV Show | 2009 | Creating the World of Harry Potter | Self - 'Arthur Weasley' | 8 |
| TV Show | 2006 | The One Show | Self | 1 |
| TV Show | 1994 | Harry Enfield and Chums | Husband on Holiday | 1 |
| TV Show | 2002 | Shackleton | Dudley Docker | 1 |
| TV Show | 1988 | The Storyteller | Fearnot's Brother | 1 |
| TV Show | 1989 | Great Expectations | Mr. Trabb's Son | 3 |
