Attended Terenure College, where he began acting in the school's theater program
Returned to Ireland after graduating from the Royal Academy of Dramatic Art to begin his career as a theatre actor before moving into television and film
Was part of the original cast of the play The Seafarer when it premiered on the West End in 2006; when the play transferred to Broadway, his role was recast with Sean Mahon
Appeared in the play The Night Alive at the Donmar Warehouse in 2013, opposite Ciarán Hines and Jim Norton
Joined Game of Thrones during the show's second season, as the recurring character Roose Bolton; was promoted to a series regular for season six
Awards
2013Screen Actors Guild Awards-Outstanding Performance by an Ensemble in a Drama Series:nominated