Olaf Pooley

Olaf Pooley (born 13 March 1914 ) played Professor Eric Stahlman and Director Stahlmann in the Doctor Who story Inferno.

He had a role in  in 2000, making him one of the very few actors to appear in both Doctor Who and Star Trek.

, he is the oldest living Doctor Who actor. He was the second person, and first male, associated with Doctor Who to reach the age of 100.