Acting
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.
Midsomer Murders
1997 · TV
Doctor Who
2005 · TV
Top of the Pops
1964 · TV
Agatha Christie's Marple
2004 · TV
Casualty
1986 · TV
Harry Potter and the Prisoner of Azkaban
2004 · Movie
Harry Potter and the Goblet of Fire
2005 · Movie
Harry Potter and the Chamber of Secrets
2002 · Movie
The One Show
2006 · TV
Harry Potter and the Half-Blood Prince
2009 · Movie
Harry Potter and the Order of the Phoenix
2007 · Movie
Father Brown
2013 · TV
Merlin
2008 · TV
Peak Practice
1993 · TV
Harry Potter and the Deathly Hallows: Part 2
2011 · Movie
Loose Women
1999 · TV
Harry Potter and the Deathly Hallows: Part 1
2010 · Movie
New Tricks
2004 · TV
Hustle
2004 · TV
Red Dwarf
1988 · TV
Sister Boniface Mysteries
2022 · TV
The Musketeers
2014 · TV
Being Human
2009 · TV
101 Dalmatians
1996 · Movie
Stardust
2007 · Movie
The Storyteller
1988 · TV
Comedy Lab
1998 · TV
Harry Potter 20th Anniversary: Return to Hogwarts
2022 · Movie
Sense and Sensibility
2008 · TV
Bottom
1991 · TV
Early Man
2018 · Movie
The Fast Show
1994 · TV
Exit Wounds
2001 · Movie
Harry Enfield and Chums
1994 · TV
Blandings
2013 · TV
Gormenghast
2000 · TV
Shakespeare in Love
1998 · Movie
Saxondale
2006 · TV
Chef
1993 · TV
Little Crackers
2010 · TV
The Indian Doctor
2010 · TV
Shackleton
2002 · TV
Here We Go
2022 · TV
The Borrowers
1997 · Movie
Agent Cody Banks 2: Destination London
2004 · Movie
Happiness
2001 · TV
99-1
1994 · TV
The Rotters' Club
2005 · TV
Prince of Jutland
1994 · Movie
Albert Nobbs
2011 · Movie
The Strangerers
2000 · TV
The Smell of Reeves and Mortimer
1993 · TV
Great Expectations
1989 · TV
Dragon Fight
1989 · Movie
Alexei Sayle's Stuff
1988 · TV
50 Greatest Harry Potter Moments
2011 · Movie
Fantastic Friends
2022 · TV
A Cock and Bull Story
2005 · Movie
High Heels and Low Lifes
2001 · Movie
When Harry Left Hogwarts
2011 · Movie
Industrial Revelations
2002 · TV
The Look of Love
2013 · Movie
KYTV
1989 · TV
Golden Years
2016 · Movie
A Room with a View
2007 · Movie
The Secret Santa Project
2025 · Movie
Ted & Ralph
1998 · Movie
Dick Whittington: The ITV Pantomime
2002 · Movie
Merlin of the Crystal Cave
1991 · TV
Tumbledown
1988 · Movie
Red Top
2016 · Movie
Whatever Happened to Harold Smith?
2000 · Movie
Anita and Me
2002 · Movie
Robin and the Hoods
2024 · Movie
We're Going on a Bear Hunt
2016 · Movie
Surprised by Oxford
2023 · Movie
Hunting Venus
1999 · Movie
The Heart of Me
2004 · Movie
Harry Potter: A History Of Magic
2017 · Movie
Dream Hacker
2025 · Movie
The Final Curtain
2002 · Movie
Mark Williams On The Rails
2004 · TV
Suit You Sir! The Inside Leg Of The Fast Show
1999 · Movie
Viva Blackpool
2006 · Movie
The World's Strangest UFO Stories
2006 · TV
Coppers
1988 · Movie
The Fast Show Live
1998 · Movie
Combat Sheep
2001 · Movie
Super Villans
2022 · Movie
Mark Williams' Big Bangs
· TV
Fever
1994 · Movie
Frankenstein's Wedding... Live in Leeds
2011 · Movie
Privileged
1982 · Movie
The Fast Show: The Farewell Tour
2003 · Movie
The Dark Channel
· Movie
Heidi: Queen of the Mountain
2017 · Movie
Second Star to the Left
2001 · Movie
Saxondale: On The Road
2006 · Movie
The Fast Show: More Blooming Catchphrases
2020 · Movie
Steve Coogan: The Inside Story
2009 · Movie
The Effects of Lying
2023 · Movie
The Storyteller: Fearnot
1988 · Movie
