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.
Known For
Midsomer Murders
1997
Doctor Who
2005
Top of the Pops
1964
The One Show
2006
Casualty
1986
Father Brown
2013
Peak Practice
1993
Loose Women
1999
Harry Potter and the Prisoner of Azkaban
2004
Merlin
2008
Harry Potter and the Chamber of Secrets
2002
Harry Potter and the Order of the Phoenix
2007
Filmography
Midsomer Murders
as Pat Everett · 1997
Doctor Who
as Brian Williams · 2005
Top of the Pops
as Self - Host · 1964
The One Show
as Self · 2006
Casualty
as Des Jones · 1986
Father Brown
as Father Brown · 2013
Peak Practice
as Roland Grogan · 1993
Loose Women
as Self · 1999
Harry Potter and the Prisoner of Azkaban
as Arthur Weasley · 2004
Merlin
as The Goblin (voice) · 2008
Harry Potter and the Chamber of Secrets
as Arthur Weasley · 2002
Harry Potter and the Order of the Phoenix
as Arthur Weasley · 2007
Agatha Christie's Marple
as Commander Peters · 2004
Harry Potter and the Goblet of Fire
as Arthur Weasley · 2005
Harry Potter and the Deathly Hallows: Part 2
as Arthur Weasley · 2011
New Tricks
as David Beaumont · 2004
Hustle
as Dale Ridley · 2004
Harry Potter and the Deathly Hallows: Part 1
as Arthur Weasley · 2010
Red Dwarf
as Olaf Petersen · 1988
Harry Potter and the Half-Blood Prince
as Arthur Weasley · 2009
Sister Boniface Mysteries
as Father Brown · 2022
The Musketeers
as Pathologist · 2014
Saxondale
as Deggsy · 2006
101 Dalmatians
as Horace · 1996
Being Human
as Regus · 2009
Early Man
as Barry (voice) · 2018
The Fast Show
as Various Characters · 1994
The Storyteller
as Fearnot's Brother · 1988
Sense and Sensibility
as Sir John Middleton · 2008
Harry Potter 20th Anniversary: Return to Hogwarts
as Self · 2022
Stardust
as Billy · 2007
Bottom
as Boris · 1991
Comedy Lab
as Mr. Anderson · 1998
Shakespeare in Love
as Wabash · 1998
Harry Enfield and Chums
as Husband on Holiday · 1994
Exit Wounds
as Cop · 2001
Here We Go
as Frank · 2022
Little Crackers
as Father Christmas · 2010
Blandings
as Sebastian Beach · 2013
Chef
as Policeman 2 · 1993
The Indian Doctor
as Richard Sharpe · 2010
Gormenghast
as Professor Perch · 2000
Shackleton
as Dudley Docker · 2002
The Borrowers
as Exterminator Jeff · 1997
Agent Cody Banks 2: Destination London
as Inspector Crescent · 2004
99-1
as John Samms · 1994
Industrial Revelations
· 2002
The Rotters' Club
as Sam Chase · 2005
Fantastic Friends
as Self · 2022
Albert Nobbs
as Sean Casey · 2011
Alexei Sayle's Stuff
· 1988
KYTV
· 1989
The Smell of Reeves and Mortimer
· 1993
A Cock and Bull Story
as Ingoldsby · 2005
Carrie & Barry
as Kirk · 2004
Great Expectations
as Mr. Trabb's Son · 1989
Kinsey
as Danny · 1991
Happiness
· 2001
The Strangerers
as Cadet Flynn · 2000
A Room with a View
as Mr Beebe · 2008
The Look of Love
as Follies Director · 2013
Fun at the Funeral Parlour
· 2001
Mark Williams On The Rails
as Self - Presenter · 2004
High Heels and Low Lifes
as Tremaine · 2001
Merlin of the Crystal Cave
as Cerdic · 1991
50 Greatest Harry Potter Moments
as Arthur Weasley (archive footage) · 2011
Star
as Mr Fisher · 2003
Robin and the Hoods
as The Mayor · 2024
Harry Potter: A History Of Magic
as Himself · 2017
When Harry Left Hogwarts
as Self · 2011
A Room with a View
as Mr Beebe · 2007
Prince of Jutland
as Aslak · 1994
The Final Curtain
as Declan Farrell · 2002
The Fast Show: You Ain’t Seen These, Right?
· 1999
Jumpers for Goalposts
as Tommy Stein · 2001
Surprised by Oxford
as Professor Nuttham · 2023
The Heart of Me
as Man · 2004
We're Going on a Bear Hunt
as Dad (voice) · 2016
Steve Coogan: The Inside Story
as Self · 2009
Super Villans
as Self · 2022
Whatever Happened to Harold Smith?
as Roland Thornton · 2000
Anita and Me
as The Reverend 'Uncle' Alan · 2002
Bunch Of Five
as Tim · 1992
Dream Hacker
as Edgar Wainwright · 2025
The Fast Show Live
· 1998
Red Top
as Police Commissioner Hamish Pritchard · 2016
Second Star to the Left
as Duke (voice) · 2001
The Secret Santa Project
as Leon · 2025
Dick Whittington: The ITV Pantomime
as King Rat · 2002
Born Naughty?
as Self - Narrator (voice) · 2015
The Storyteller: Fearnot
as Fearnot's Brother · 1988
Golden Years
as Phil · 2016
Suit You Sir! The Inside Leg Of The Fast Show
as Self · 1999
Frankenstein's Wedding... Live in Leeds
as Alphonse Frankenstein · 2011
Viva Blackpool
as Tommy Vesty · 2006
The Fast Show: The Farewell Tour
as Various · 2003
Heidi: Queen of the Mountain
as Henry · 2017
The Big Game
as Tommy Hollis · 1995
Tumbledown
as Lumpy · 1988
Saxondale: On The Road
as Self · 2006
Hunting Venus
as Peter · 1999
The Fast Show: More Blooming Catchphrases
as Self/Various Characters · 2020
Fever
as Jukebox Man · 1994
Fern
· 2011
The Effects of Lying
· 2023
The World's Strangest UFO Stories
as Self - Narrator (voice) · 2006
Ted & Ralph
as Confirmed Bachelor · 1998
Privileged
as Wilf · 1982
Combat Sheep
as Moose (voice) · 2001
The Dark Channel
as Mabuse · 2021
Mark Williams' Big Bangs
Coppers
· 1988
Happy Birthday Shakespeare
as Ted · 2000
Lead Heads
The Dudley Bug
as Roderick the Palaeontologist