Iain Glen is an actor.
Iain Glen . Glen is best known for his roles as Dr. Alexander Isaacs / Tyrant in the Resident Evil films and for portraying 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 .