
Mark Williams
Biography
Mark Williams (born August 22, 1959) is an English actor, comedian, presenter and screenwriter. He first achieved widespread recognition as one of the central performers in the popular BBC sketch show The Fast Show. His film roles include Horace in the 1996 adaptation of 101 Dalmatians and Arthur Weasley in seven of the Harry Potter films. He made recurring appearances as Brian Williams in the BBC television series Doctor Who and as Olaf Petersen in Red Dwarf. Since 2013, Williams has portrayed the title character in the long-running BBC series loosely based on the Father Brown short stories by G. K. Chesterton.
Gallery

Known For
Acting History
2025
The Secret Santa Project as Leon
2025Dream Hacker as Edgar Wainwright
2024Robin and the Hoods as The Mayor
2023Surprised by Oxford as Professor Nuttham
2023The Effects of Lying
2022Super Villans as Self
2022Here We Go as Frank
2022Sister Boniface Mysteries as Father Brown
2022Harry Potter 20th Anniversary: Return to Hogwarts as Self
2018Early Man as Barry (voice)
2017Heidi: Queen of the Mountain as Henry
2017Harry Potter: A History Of Magic as Himself
2016We're Going on a Bear Hunt as Dad (voice)
2016Golden Years as Phil
2016Red Top as Police Commissioner Hamish Pritchard
2015Born Naughty? as Self - Narrator (voice)
2014The Musketeers as Pathologist
2013The Look of Love as Follies Director
2013Father Brown as Father Brown
2013Blandings as Sebastian Beach
2011Albert Nobbs as Sean Casey
2011When Harry Left Hogwarts as Self
201150 Greatest Harry Potter Moments as Arthur Weasley (archive footage)
2011Harry Potter and the Deathly Hallows: Part 2 as Arthur Weasley
2011Fern
2011Frankenstein's Wedding... Live in Leeds as Alphonse Frankenstein
2010Little Crackers as Father Christmas
2010Harry Potter and the Deathly Hallows: Part 1 as Arthur Weasley
2010The Indian Doctor as Richard Sharpe
2009Steve Coogan: The Inside Story as Self
2009Harry Potter and the Half-Blood Prince as Arthur Weasley
2009Being Human as Regus
2008Merlin as The Goblin (voice)
2008Sense and Sensibility as Sir John Middleton
2007A Room with a View as Mr Beebe
2007Stardust as Billy
2007Harry Potter and the Order of the Phoenix as Arthur Weasley
2006Saxondale: On The Road as Self
2006The One Show as Self
2006Saxondale as Deggsy
2006Viva Blackpool as Tommy Vesty
2006The World's Strangest UFO Stories as Self - Narrator (voice)
2005Harry Potter and the Goblet of Fire as Arthur Weasley
2005A Cock and Bull Story as Ingoldsby
2005Doctor Who as Brian Williams
2005The Rotters' Club as Sam Williams
2004Agatha Christie's Marple as Commander Peters
2004Carrie and Barry as Kirk
2004Harry Potter and the Prisoner of Azkaban as Arthur Weasley
2004Mark Williams On The Rails as Self - Presenter
2004Agent Cody Banks 2: Destination London as Inspector Crescent
2004Hustle as Dale Ridley
2004The Heart of Me as Man
2004New Tricks as David Beaumont
2003The Fast Show: The Farewell Tour as Various
2002Anita and Me as The Reverend 'Uncle' Alan
2002Harry Potter and the Chamber of Secrets as Arthur Weasley
2002The Final Curtain as Declan Farrell
2002Industrial Revelations
2002Shackleton as Dudley Docker
2002Dick Whittington: The ITV Pantomime as King Rat
2001Combat Sheep as Moose (voice)
2001Second Star to the Left as Duke (voice)
2001High Heels and Low Lifes as Tremaine
2001Happiness
2001Exit Wounds as Cop
2001Jumpers for Goalposts as Tommy Stein
2001Fun at the Funeral Parlour
2000Happy Birthday Shakespeare as Ted
2000Whatever Happened to Harold Smith? as Roland Thornton
2000The Strangerers as Cadet Flynn
2000Gormenghast
2000Gormenghast as Professor Perch
1999Suit You Sir! The Inside Leg Of The Fast Show as Self
1999Loose Women as Self
1999Hunting Venus as Peter
1998The Fast Show Live
1998Shakespeare in Love as Wabash
1998Comedy Lab as Mr. Anderson
1997The Borrowers as Exterminator Jeff
1997Midsomer Murders as Pat Everett
1996101 Dalmatians as Horace
1995The Big Game as Tommy Hollis
1994Fever as Jukebox Man
1994Harry Enfield and Chums as Husband on Holiday
1994The Fast Show as Various Characters
1994Prince of Jutland as Aslak
199499-1 as John Samms
1993The Smell of Reeves and Mortimer
1993Peak Practice as Roland Grogan
1993Chef as Policeman 2
1991Bottom as Boris
1989Dragon Fight as Ray
1989Great Expectations as Mr. Trabb's Son
1989KYTV
1988Coppers
1988Alexei Sayle's Stuff
1988Tumbledown as Lumpy
1988The Storyteller as Fearnot's Brother
1988Red Dwarf as Olaf Petersen
1986Casualty as Des Jones
1982Privileged as Wilf
1964Top of the Pops as Self - Host
—Lead Heads
—The Dark Channel as Mabuse
—Mark Williams' Big Bangs









