John Leeson, the actor best known as the voice of K9, the robot dog in Doctor Who, has died at 83.
asserted
Leeson → know → 83
Leeson’s son, Guy Ducker, shared the news on Facebook.
asserted
son → share → Facebook
He wrote: “I regret to announce the death of my father … after a summer of illness.
asserted
I → write → illness
In a separate post on social media, Ducker said: “Many thanks to the Whovian community for the love they showed to my father over the decades, it meant a lot to him and me.”
asserted
it → say → him
Born John Ducker in 1943, he trained at Rada before embarking on a successful career on stage and screen.
asserted
he → bear → stage
He was known for his character work across a range of TV shows such as Dad’s Army, Sorry!, Crown Court and Longitude, while other credits included The Bill, Vanity Fair, Doctors and Blake’s 7.
asserted
credits → know → Bill
But Leeson was best known for K9, created by Bob Baker and Dave Martin, who was introduced to Doctor Who in 1977 in a Tom Baker-led story called The Invisible Enemy.
asserted
who → know → story
Originally only intended to appear in that single script, the production team believed the character would be popular with younger viewers, and decided to have the metallic mutt join the Tardis team.
asserted
mutt → intend → team
He stayed until 1981 – although K9 was also voiced for a period by David Brierly – establishing the catchphrase “Affirmative, Master” when addressing the Doctor.
asserted
K9 → stay → Doctor
Leeson reprised the role in the 20th anniversary special of Doctor Who and in a spin-off K-9 and Company, which featured Elisabeth Sladen as popular companion Sarah Jane Smith.
asserted
which → reprise → Smith
Sladen and Leeson were reunited in Doctor Who in 2006 in a David Tennant episode called School Reunion, before featuring in the CBBC spin-off Sarah Jane Adventures, which aired from 2007 until Sladen’s death in 2011.
asserted
which → reunite → 2011
In an Instagram post after Leeson’s death, the former Doctor Who showrunner Russell T Davies said: “There was no question that we’d ask John to provide the voice” when the robot returned.
asserted
robot → say → voice
Pitched perfectly so that kids could impersonate him.
uncertain
kids → pitch → him
That’s not easy.
asserted
That → ’ → ?
Keith Barnfather, who first worked with Leeson in the 1980s and who produces behind-the-scenes documentaries about Doctor Who, described the actor as “kind, considerate, professional, charming, talented, unassuming”.
asserted
who → work → unassuming
Lisa Bowerman, who has credits for work across the Doctor Who universe, remembered him as “an utterly lovely man, excellent company and – and I don’t hesitate to use this word for once – a truly iconic voice”.
asserted
I → have → word
After leaving school, Leeson worked as a hospital porter before auditioning for Rada.
asserted
Leeson → leave → Rada
Talking about his career in interviews, Leeson described it as being in two parts: “Half of my career has been pretty much as a stage actor and the television half of my career arose pretty much by accident.”
asserted
half → talk → accident
Leeson had a stint playing Bungle on the children’s show Rainbow, a job in which he described being “poured out of this costume every evening into a taxi”, because a day’s work in a small studio under the hot lights left him “really ill inside this bear suit”.
asserted
work → have → suit
He also once lamented the haircut he was given when appearing on Dad’s Army, saying: “I was livid because they gave me an army haircut, a real basin job, and then of course put me in a balaclava and a tin hat, so nobody could see the hair anyway.”
uncertain
nobody → lament → hair
He was still working as K9, providing voices for Big Finish audio dramas last year.
asserted
He → work → dramas
This was despite, he once said, being told by producers at the BBC after his debut that “under no circumstances would there be anything after the first episode has been shot and is in the can.
asserted
episode → say → can
And here I am in 2025 still attached to Doctor Who …
asserted
I → attach → Who
I got to meet a tremendous number of knees doing K9.”
asserted
I → got → K9
The Aporia
