
John Leeson
- Known for
- Acting
- Born
- March 16, 1943
- Died
- November 1, 2026 (aged 83)
- Birthplace
- Leicester, Leicestershire, England, UK
Biography
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.
Known For
Photos
Filmography

The Doctor Who Escape Room: Team Third Doctor
Movie · as K9 (voice)

Darkness & Light: The Life of Graham Williams
Movie · as Self

Doctor Who: Behind the Sofa
TV · as Self · 8 eps

The Doctors: The Tom Baker Years
Movie

Longleat '83: The Lost Footage
Movie

Myth Makers
TV · as Himself · 1 ep

The Five(ish) Doctors Reboot
Movie · as Self

Pointless Celebrities
TV · as K-9 (voice) · 1 ep

K-9
TV · as K-9 (voice) · 26 eps

Celebration: Doctor Who in 1983
Movie

The K-9 Files
Movie

The Sarah Jane Adventures: Invasion of the Bane
Movie · as K9

A Matter of Time
Movie

Parrot Fashion
Movie

Getting Blood from the Stones
Movie

The Sarah Jane Adventures
TV · as K9 (voice) · 10 eps

Doctor Who
TV · as K9 (voice) · 2 eps

A New Beginning
Movie

Doctor Who: Shada
Movie · as K9 (voice)

Longleat '83: The Greatest Show in the Galaxy
Movie · as Himself - Host

K9 Unleashed
Movie

Longitude
TV · as BBC Producer · 1 ep

Where on Earth Is Katy Manning?
Movie

Vanity Fair
TV · as Priest · 1 ep

Downtime
Movie · as Anthony the D.J.

Bugs
TV · as Harris · 1 ep

Doctor Who: Dimensions in Time
Movie · as K9 (voice)

Search Out Space
Movie · as K9 (voice)

Shadow of the Noose
TV · as Dickinson · 1 ep

Doctor Who: Remembrance of the Daleks
Movie · as Dalek Battle Computer (voice)

Myth Runner
Movie · as Himself

Whoops Apocalypse
Movie · as TV Interviewer

'Allo 'Allo!
TV · as Train's Cook · 1 ep

Doctor Who: The Five Doctors
Movie · as K9 (voice)

The Barretts of Wimpole Street
Movie · as Henry Barrett

Doctor Who: Warriors' Gate
Movie · as K9 (voice)

K-9 and Company: A Girl's Best Friend
Movie · as K-9 (voice)

K-9 and Company
TV · as K-9 (voice) · 1 ep

Doctor Who: Meglos
Movie · as K9 (voice)

Doctor Who: The Leisure Hive
Movie · as K9 (voice)

Doctor Who: Full Circle
Movie · as K9 (voice)

Doctor Who: State of Decay
Movie · as K9 (voice)

Tarka the Otter
Movie · as Secretary of the Hunt

Doctor Who: The Power of Kroll
Movie · as Dugeen

Doctor Who: The Armageddon Factor
Movie · as K-9 (voice)

Minder
TV · as Passport Officer · 1 ep

Jigsaw
TV · as Jig · 25 eps

Doctor Who: The Ribos Operation
Movie · as K-9 (voice)

Doctor Who: Underworld
Movie · as K-9 Mk. I (voice)

Doctor Who: The Invasion of Time
Movie · as K9 (voice)

Doctor Who: The Stones of Blood
Movie · as K-9 (voice)

Doctor Who: The Androids of Tara
Movie · as K-9 (Voice)

Doctor Who: The Pirate Planet
Movie · as K-9 (voice)

Merry Christmas Doctor Who
Movie · as K9 (voice)

Blake's 7
TV · as Toise, Pasco · 1 ep

Doctor Who: The Sun Makers
Movie · as K9 Mk. I (voice)

Doctor Who: The Invisible Enemy
Movie · as K-9 Mk. I (voice) / Nucleus (voice)
Husband to Mrs. Fitzherbert
Movie · as Clergyman

Rainbow
TV · as Bungle · 105 eps
On the House
TV · as Young Man · 1 ep

Dad's Army
TV · as Soldier · 1 ep
The Spanish Farm
TV · as Lt Mansfield · 1 ep

Doctor Who
TV · as K9 (voice), Dugeen, Daleks (voice) · 80 eps

