Richard E. Grant has been cast in season six of Game of Thrones, but there is no news yet on what role he will play.
Jonathan Pryce and Ian McShane have also recently joined the cast.
Grant was in three episodes of Doctor Who as Dr. Simeon, also known as The Great Intelligence. He has also appeared in Dracula and Corpse Bride.
Game of Thrones returns in April of 2016.