John Leeson 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, and has returned for two single episode 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.
K9 Unleashed
Longleat '83: The Lost Footage
Doctor Who: Dimensions in Time
As K9 (voice)
The Five(ish) Doctors Reboot
As Self
Downtime
As Anthony the D.J.
The Doctors: The Tom Baker Years
Tarka the Otter
As Secretary of the Hunt
The Sarah Jane Adventures: Invasion of the Bane
As K9
Doctor Who: The Ribos Operation
As K-9 (voice)
Doctor Who: The Sun Makers
As K9 Mk. I (voice)
Doctor Who: The Invisible Enemy
As K-9 Mk. I (voice) / Nucleus (voice)
Doctor Who: Underworld
As K-9 Mk. I (voice)
Doctor Who: The Invasion of Time
As K9 (voice)
Doctor Who: The Stones of Blood
As K-9 (voice)
Doctor Who: The Androids of Tara
As K-9 (Voice)
Doctor Who: Meglos
As K9 (voice)
Doctor Who: The Power of Kroll
As Dugeen
Doctor Who: The Armageddon Factor
As K-9 (voice)
Doctor Who: The Leisure Hive
As K9 (voice)
Doctor Who: Warriors' Gate
As K9 (voice)
Doctor Who: Full Circle
As K9 (voice)
Doctor Who: State of Decay
As K9 (voice)
Doctor Who: Remembrance of the Daleks
As Voices
Doctor Who: The Pirate Planet
As K-9 (voice)
K-9 and Company: A Girl's Best Friend
As K-9 (voice)
Doctor Who: The Five Doctors
As K9 (voice)
Celebration: Doctor Who in 1983
Myth Runner
As Himself
Myth Makers 2: John Leeson
Where on Earth Is Katy Manning?
Longleat '83: The Greatest Show in the Galaxy
As Himself - Host
The Barretts of Wimpole Street
As Henry Barrett
Doctor Who: Shada
As K9 (voice)
Whoops Apocalypse
As TV Interviewer
The Sarah Jane Adventures
As K9 (voice)
K-9 and Company
Sorry!
'Allo 'Allo!
As Train's Cook
K-9
As K-9 (voice)
Pointless Celebrities
As K-9 (voice)
Sarah Jane's Alien Files
As K9
Doctor Who
As K9 (voice)
Rainbow
As Bungle
Doctor Who
As K9 (voice)
Minder
As Passport Officer
Blake's 7
As Toise
Bugs
As Harris