Paul Valentine Birkby (May 2, 1941 – June 3, 2019) was a performer from England, notable for lending his voice to Grand Moff Wilhuff Tarkin in the video game Star Wars: Empire at War. Additionally, he voiced Tremel, a significant character featured early in the Sith Warrior narrative of Star Wars: The Old Republic. He gained recognition for portraying Kerr Avon in the British TV show Blake's 7.