Mark Williams
From Tardis Wiki, the free Doctor Who reference
Mark Williams (born 22 August 1959) voiced Maxwell Edison in the Big Finish Productions audio drama The Eternal Summer. He later played the role of Brian Williams, the father of companion Rory Williams, in the seventh series of Doctor Who, appearing in Dinosaurs on a Spaceship.
He is perhaps best known for playing Mr. Weasley in seven of the eight Harry Potter films (alongside David Bradley). He also appeared in Being Human and The Fast Show, alongside Arabella Weir.