Mark Williams
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.
Born: 22 August 1959
Played In
Movie
Nov 2025
The Secret Santa Project
Leon
Movie
Jun 2025
Dream Hacker
Edgar Wainwright
Movie
Oct 2024
Robin and the Hoods
The Mayor
Movie
Sep 2023
Surprised by Oxford
Professor Nuttham
Movie
Jul 2023
The Effects of Lying
TV Show
Jun 2022
Fantastic Friends
Self
Movie
May 2022
Super Villans
Self
TV Show
Apr 2022
Here We Go
Frank
TV Show
Mar 2022
Sister Boniface Mysteries
Father Brown
Movie
Jan 2022
Harry Potter 20th Anniversary: Return to Hogwarts
Self
Movie
Aug 2020
The Fast Show: More Blooming Catchphrases
Self/Various Characters
Movie
Jan 2018
Early Man
Barry (voice)
Movie
Dec 2017
Heidi: Queen of the Mountain
Henry
Movie
Oct 2017
Harry Potter: A History Of Magic
Himself
Movie
Dec 2016
We're Going on a Bear Hunt
Dad (voice)
Movie
Apr 2016
Golden Years
Phil
Movie
Jan 2016
Red Top
Police Commissioner Hamish Pritchard
TV Show
May 2015
Born Naughty?
Self - Narrator (voice)
TV Show
Jan 2014
The Musketeers
Pathologist
Movie
Apr 2013
The Look of Love
Follies Director
TV Show
Jan 2013
Father Brown
Father Brown
TV Show
Jan 2013
Blandings
Sebastian Beach
Movie
Dec 2011
Albert Nobbs
Sean Casey
Movie
Nov 2011
When Harry Left Hogwarts
Self
Movie
Jul 2011
50 Greatest Harry Potter Moments
Arthur Weasley (archive footage)
Movie
Jul 2011
Harry Potter and the Deathly Hallows: Part 2
Arthur Weasley
TV Show
Mar 2011
Fern
Movie
Mar 2011
Frankenstein's Wedding... Live in Leeds
Alphonse Frankenstein
TV Show
Dec 2010
Little Crackers
Father Christmas
Movie
Nov 2010
Harry Potter and the Deathly Hallows: Part 1
Arthur Weasley
TV Show
Nov 2010
The Indian Doctor
Richard Sharpe
Movie
Dec 2009
Steve Coogan: The Inside Story
Self
Movie
Jul 2009
Harry Potter and the Half-Blood Prince
Arthur Weasley
TV Show
Jan 2009
Being Human
Regus
TV Show
Sep 2008
Merlin
The Goblin (voice)
TV Show
Apr 2008
A Room with a View
Mr Beebe
TV Show
Jan 2008
Sense and Sensibility
Sir John Middleton
Movie
Nov 2007
A Room with a View
Mr Beebe
Movie
Aug 2007
Stardust
Billy
Movie
Jul 2007
Harry Potter and the Order of the Phoenix
Arthur Weasley
Movie
Sep 2006
Saxondale: On The Road
Self
TV Show
Aug 2006
The One Show
Self
TV Show
Jun 2006
Saxondale
Deggsy
Movie
Jun 2006
Viva Blackpool
Tommy Vesty
TV Show
Feb 2006
The World's Strangest UFO Stories
Self - Narrator (voice)
Movie
Nov 2005
Harry Potter and the Goblet of Fire
Arthur Weasley
Movie
Jul 2005
A Cock and Bull Story
Ingoldsby
TV Show
Mar 2005
Doctor Who
Brian Williams
TV Show
Jan 2005
The Rotters' Club
Sam Chase
TV Show
Dec 2004
Agatha Christie's Marple
Commander Peters
TV Show
Sep 2004
Carrie & Barry
Kirk
Movie
May 2004
Harry Potter and the Prisoner of Azkaban
Arthur Weasley
TV Show
Apr 2004
Mark Williams On The Rails
Self - Presenter
Movie
Mar 2004
Agent Cody Banks 2: Destination London
Inspector Crescent
TV Show
Feb 2004
Hustle
Dale Ridley
Movie
Feb 2004
The Heart of Me
Man
TV Show
Jan 2004
New Tricks
David Beaumont
Movie
Nov 2003
The Fast Show: The Farewell Tour
Various
TV Show
Sep 2003
Star
Mr Fisher
Movie
Nov 2002
Anita and Me
The Reverend 'Uncle' Alan
Movie
Nov 2002
Harry Potter and the Chamber of Secrets
Arthur Weasley
Movie
Oct 2002
The Final Curtain
Declan Farrell
TV Show
Jan 2002
Industrial Revelations
TV Show
Jan 2002
Shackleton
Dudley Docker
Movie
Jan 2002
Dick Whittington: The ITV Pantomime
King Rat
Movie
Dec 2001
Combat Sheep
Moose (voice)
Movie
Dec 2001
Second Star to the Left
Duke (voice)
Movie
Jul 2001
High Heels and Low Lifes
Tremaine
TV Show
Mar 2001
Happiness
Movie
Mar 2001
Exit Wounds
Cop
TV Show
Mar 2001
Jumpers for Goalposts
Tommy Stein
TV Show
Jan 2001
Fun at the Funeral Parlour
Movie
Apr 2000
Happy Birthday Shakespeare
Ted
Movie
Mar 2000
Whatever Happened to Harold Smith?
Roland Thornton
TV Show
Feb 2000
The Strangerers
Cadet Flynn
TV Show
Jan 2000
Gormenghast
Professor Perch
Movie
Sep 1999
Suit You Sir! The Inside Leg Of The Fast Show
Self
TV Show
Sep 1999
Loose Women
Self
Movie
Mar 1999
Hunting Venus
Peter
Movie
Dec 1998
The Fast Show Live
Movie
Dec 1998
Ted & Ralph
Confirmed Bachelor
Movie
Dec 1998
Shakespeare in Love
Wabash
TV Show
Nov 1998
Comedy Lab
Mr. Anderson
Movie
Dec 1997
The Borrowers
Exterminator Jeff
TV Show
Mar 1997
Midsomer Murders
Pat Everett
Movie
Nov 1996
101 Dalmatians
Horace
Movie
Jun 1995
The Big Game
Tommy Hollis
Movie
Dec 1994
Fever
Jukebox Man
TV Show
Nov 1994
Harry Enfield and Chums
Husband on Holiday
TV Show
Sep 1994
The Fast Show
Various Characters
Movie
Feb 1994
Prince of Jutland
Aslak
TV Show
Jan 1994
99-1
John Samms
TV Show
Sep 1993
The Smell of Reeves and Mortimer
TV Show
May 1993
Peak Practice
Roland Grogan
TV Show
Jan 1993
Chef
Policeman 2
TV Show
Nov 1991
Merlin of the Crystal Cave
Cerdic
TV Show
Sep 1991
Bottom
Boris
Movie
Sep 1989
Dragon Fight
Ray
TV Show
Jul 1989
Great Expectations
Mr. Trabb's Son
TV Show
May 1989
KYTV
Movie
Oct 1988
Coppers
TV Show
Oct 1988
Alexei Sayle's Stuff
Movie
May 1988
Tumbledown
Lumpy
Movie
May 1988
The Storyteller: Fearnot
Fearnot's Brother
TV Show
May 1988
The Storyteller
Fearnot's Brother
TV Show
Feb 1988
Red Dwarf
Olaf Petersen
TV Show
Sep 1986
Casualty
Des Jones
Movie
Sep 1982
Privileged
Wilf
TV Show
Jan 1964
Top of the Pops
Self - Host
Movie
Lead Heads
Movie
The Dark Channel
Mabuse
TV Show
Mark Williams' Big Bangs