John Leeson, Voice of K9 in 'Doctor Who', Dies at 83
Actor and voice artist John Leeson, renowned for his portrayal of the beloved robot dog K9 in 'Doctor Who', has passed away at the age of 83.
John Leeson, the iconic voice behind K9 in the long-running British science fiction series 'Doctor Who', has died at the age of 83, confirmed by his son Guy Ducker on Facebook 12. Leeson, who was born in 1943 in Leicester, England, brought life to the four-legged companion of the Doctor since the character's introduction in 1977 1.
Leeson's distinctive vocal performance earned him praise from fellow 'Doctor Who' creator Russell T Davies, who described him as a 'true gent' with 'perfect pitch' 1. This accolade is particularly significant given Leeson's enduring contribution to the franchise, as he continued to voice K9 for Big Finish audio dramas right up until 2025 1.
Leeson's journey in the world of entertainment began with his studies at the prestigious Royal Academy of Dramatic Art from 1962 to 1964 2. After honing his craft in theatre, he transitioned into television, where he found his most memorable role as K9. His portrayal of the robotic canine companion spanned multiple eras of 'Doctor Who', including the tenures of both Tom Baker and Peter Davison as the Doctor 2.
In addition to his work in 'Doctor Who', Leeson lent his voice to various spin-offs featuring K9, such as 'K-9 and Company', 'The Sarah Jane Adventures', and simply titled 'K9' 2. These roles further cemented his status as a beloved figure in the hearts of fans of the show.
What we know
- - John Leeson, known for voicing K9 in 'Doctor Who', passed away 12
- - Leeson died at the age of 83 12
- - The news was announced by his son Guy Ducker on Facebook 12
- - Leeson was born in 1943 12
- - K9 was introduced in 'Doctor Who' in 1977 1
- - Russell T Davies praised Leeson for his perfect pitch and described him as a 'true gent' 1
- - Leeson continued to voice K9 for Big Finish audio dramas up until 2025 1
- - Leeson first voiced K9 during Tom Baker's tenure as the Doctor 2
- - Leeson also voiced K9 during Peter Davison's era as the Doctor 2
- - Leeson was born on March 16, 1943, in Leicester, England 2
- - He studied at the Royal Academy of Dramatic Art from 1962 to 1964 2
- - Leeson began his career in theatre before moving into television 2
- - His work as K9 led to spin-offs such as K-9 and Company, The Sarah Jane Adventures, and K9 2
Verification report
Likely accurate — probability of truth 67%, weighted across 19 claims from 2 independent outlets.
- confirmed John Leeson, known for voicing K9 in Doctor Who, passed away. (86%)
- confirmed Leeson died at the age of 83. (86%)
- confirmed Guy Ducker, Leeson's son, announced the news on Facebook. (86%)
- confirmed Leeson was born in 1943. (86%)
- likely K9 was introduced in Doctor Who in 1977. (72%)
- likely Russell T Davies praised Leeson for his perfect pitch and described him as a 'true gent'. (72%)
- likely Leeson continued to voice K9 for Big Finish audio dramas up until 2025. (72%)
- likely Leeson first voiced K9 during Tom Baker's tenure as the Doctor. (71%)
- likely Leeson also voiced K9 during Peter Davison's era as the Doctor. (71%)
- likely Leeson was born on March 16, 1943, in Leicester, England. (71%)
- likely He studied at the Royal Academy of Dramatic Art from 1962 to 1964. (71%)
- likely Leeson began his career in theater before moving into television. (71%)
- likely His work as K9 led to spin-offs such as K-9 and Company, The Sarah Jane Adventures, and K9. (71%)
- unverified Leeson voiced K9 until 1981, with David Brierly taking over for a period. (51%)
- unverified Leeson reprised the role of K9 in the 20th anniversary special and in K-9 and Company. (51%)
- unverified Leeson voiced K9 in multiple seasons of Doctor Who from 1977 to 2008. (49%)
- unverified Leeson reprised the role for the 30th anniversary special in 1993. (49%)
- unverified He voiced K9 again in 2006 and 2008 during David Tennant's time as the Doctor. (49%)
- unverified Russell T Davies, the Doctor Who writer and showrunner, praised Leeson's dedication to the character. (49%)
Sources
- The Guardian — John Leeson, voice behind Doctor Who’s K9, dies at 83
https://www.theguardian.com/tv-and-radio/2026/nov/02/john-leeson-doctor-who-k9-dies - Variety — John Leeson, Voice of K9 on ‘Doctor Who,’ Dies at 83
https://variety.com/2026/tv/global/john-leeson-dead-voice-doctor-who-k9-1236937441/