Mark Williams
Acting
Born 1959-08-22 · Bromsgrove, Worcestershire, England, UK
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.
Filmography
The Secret Santa Project
Nov 17, 2025
Dream Hacker
Jun 10, 2025
Robin and the Hoods
Oct 17, 2024
Surprised by Oxford
Sep 27, 2023
The Effects of Lying
Jul 6, 2023
Super Villans
May 18, 2022
Harry Potter 20th Anniversary: Return to Hogwarts
Jan 1, 2022
The Fast Show: More Blooming Catchphrases
Aug 30, 2020
Early Man
Jan 26, 2018
Heidi: Queen of the Mountain
Dec 1, 2017
Harry Potter: A History Of Magic
Oct 28, 2017
We're Going on a Bear Hunt
Dec 24, 2016
Golden Years
Apr 29, 2016
Red Top
Jan 20, 2016
The Look of Love
Apr 26, 2013
Albert Nobbs
Dec 21, 2011
When Harry Left Hogwarts
Nov 11, 2011
50 Greatest Harry Potter Moments
Jul 27, 2011
Harry Potter and the Deathly Hallows: Part 2
Jul 12, 2011
Frankenstein's Wedding... Live in Leeds
Mar 19, 2011
Harry Potter and the Deathly Hallows: Part 1
Nov 17, 2010
Steve Coogan: The Inside Story
Dec 27, 2009
Harry Potter and the Half-Blood Prince
Jul 15, 2009
A Room with a View
Nov 4, 2007
Stardust
Aug 10, 2007
Harry Potter and the Order of the Phoenix
Jul 8, 2007
Saxondale: On The Road
Sep 1, 2006
Viva Blackpool
Jun 10, 2006
Harry Potter and the Goblet of Fire
Nov 16, 2005
A Cock and Bull Story
Jul 17, 2005