Background
O'Hara was born in Glasgow, Scotland, the son of Martha (née Scott) and Patrick O'Hara, a construction worker.
O'Hara was born in Glasgow, Scotland, the son of Martha (née Scott) and Patrick O'Hara, a construction worker.
He has appeared in many films and TV series, including a featured role in the US series The District, which he left after one season to return to Scotland. In 2006, O'Hara appeared as Fitzy, one of Jack Nicholson's chief mobsters in the Oscar-winning film The Departed. In June 2009, O'Hara was filming The Tudors in Dublin.
He played Albert Runcorn and Harry Potter disguised as Runcorn in Harry Potter and the Deathly Hallows – Part 1.