
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 b…

The Secret Santa Project
as Leon

Dream Hacker
as Edgar Wainwright

Robin and the Hoods
as The Mayor

Surprised by Oxford
as Professor Nuttham

The Effects of Lying

Harry Potter 20th Anniversary: Return to Hogwarts
as Self

Super Villans
as Self

The Fast Show: More Blooming Catchphrases
as Self/Various Characters

Early Man
as Barry (voice)

Harry Potter: A History Of Magic
as Himself

Sister Boniface Mysteries
as Father Brown · 1 ep.

Here We Go
as Frank · 1 ep.

Fantastic Friends
as Self · 1 ep.
Born Naughty?
as Self - Narrator (voice) · 1 ep.

The Musketeers
as Pathologist · 2 ep.

Father Brown
as Father Brown · 140 ep.

Blandings
as Sebastian Beach · 6 ep.
Fern
1 ep.

Little Crackers
as Father Christmas · 1 ep.

The Indian Doctor
as Richard Sharpe · 5 ep.

Harry Potter and the Deathly Hallows: Part 1
2010