Mark Fraser Williams (born 24 March 1966) is a British politician who served as leader of the Welsh Liberal Democrats from 2016 to 2017.

[citation needed] His mother worked as a classroom assistant, and his father ran a printing business; he has two older sisters.

In that by-election, the Liberal Democrats rose back into second place, and in the general election of 2001 consolidated that by coming second, being just 3,944 votes behind Plaid Cymru.

In May 2005, 13 years after Howells had been defeated, the Liberal Democrats regained Ceredigion, with Williams as their candidate, by a very narrow majority of 219 votes.

[7] Williams was defeated in the 2017 general election by Ben Lake of Plaid Cymru, whose majority of 104 made the seat one of the most marginal in the country.

[11] Westminster Parliament elections Mark Williams and his wife Helen have four children, Eleanor, Anna, and twins Eliza and Oliver.