Mark Williams

Mark Williams

Known For

Harry Potter and the Chamber of Secrets

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.

🎬 Movies Featuring Mark Williams

Dream Hacker

Dream Hacker (2025)

as Edgar Wainwright
Surprised by Oxford

Surprised by Oxford (2023)

as Professor Nuttham
Early Man

Early Man (2018)

as Barry (voice)
Red Top

Red Top (2016)

as Police Commissioner Hamish Pritchard
The Look of Love

The Look of Love (2013)

as Follies Director
50 Greatest Harry Potter Moments

50 Greatest Harry Potter Moments (2011)

as Arthur Weasley (archive footage)
Anita and Me

Anita and Me (2002)

as The Reverend 'Uncle' Alan
Combat Sheep

Combat Sheep (2001)

as Moose (voice)
Ted & Ralph

Ted & Ralph (1998)

as Confirmed Bachelor
The Borrowers

The Borrowers (1997)

as Exterminator Jeff
No Image

The Big Game (1995)

as Tommy Hollis
Fever

Fever (1994)

as Jukebox Man