Iain Glen (born 24 June 1961) is a Scottish film, television, and stage actor. Glen is best known for his roles as Dr. Alexander Isaacs / Tyrant in the Resident Evil films and as Ser Jorah Mormont on Game of Thrones. Other notable roles include John Hanning Speke in Mountains of the Moon, Sir Richard Carlisle in Downton Abbey, the title role in Jack Taylor and Jarrod Slade in Cleverman.