John Leeson

John Leeson (born John Francis Christopher Ducker, 16 March 1943 in Leicester, Leicestershire) is a British actor who is known for voicing K-9 on the television series Doctor Who from 1977 to 1979, then from 1980 to 1981, before returning for two single episodes in the revived series. He also voiced K-9 in the show's spin-offs K-9 and Company, The Sarah Jane Adventures and K-9.