Stephen Dillane is an English actor. His acting career started in the 1980s. He made his film debut in 1988’s Business as Usual. The following decade, he portrayed Horatio in the 1990 film Hamlet. He then starred in the films Welcome to Sarajevo and Déjà Vu. In the 2000s, he became known for his portrayal of Thomas Jefferson in the miniseries John Adams. He also played Leonard Woolf in The Hours and portrayed Merlin in the movie King Arthur. From 2012 to 2015, he became best known for his portrayal of Stannis Baratheon in Game of Thrones. Since 2013, he plays Karl Roebuck in the series The Tunnel.