John Leeson

John Leeson (16 March 1943 — 1 November 2026) was a British actor, known for voicing K-9 on the television series Doctor Who from 1977–79, then from 1980–81, and returned for two single episodes in the revival series. He also voiced K-9 in the show's spin-offs K-9 and Company, The Sarah Jane Adventures, and K-9.

John Leeson compare in La loca guerra de la Gran Bretaña, Doctor Who: The Pirate Planet, Doctor Who: The Sun Makers, The Sarah Jane Adventures: From Raxacoricofallapatorius with Love, Doctor Who: The Leisure Hive.