Made his film debut in 1982 alongside Hugh Grant in the Oxford University Film Foundation production of Privileged
Rose to fame in the 1990s on the sketch-comedy show The Fast Show; has since stated he is uncomfortable being typecast as a comedian and prefers to be considered a character actor
Has presented several documentary programs including 2004's Mark Williams on the Rails and 2006's Mark Williams' Big Bangs
Became known internationally for playing Arthur Weasley in the Harry Potter films
Returned to TV in the title role of the BBV show Father Brown in 2013
Is an avid supporter of the Aston Villa soccer team