Donald Sumpter

Donald Sumpter (born 13 February 1943) is a British actor who has worked regularly since 1966. He has appeared twice in Doctor Who and once in its spin-off, The Sarah-Jane Adventures. He recently had a major role as Kemp, the primary antagonist in the second season of Being Human, and has also been cast as Pythol in the long-awaited Warhammer 40,000 film Ultramarines: The Movie.

In Game of Thrones Sumpter is playing Maester Luwin. He was announced in the role on 20 October 2009.