John Leeson

Acting·Jan 1, 1943·Leicester, Leicestershire, England, UK

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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.

Film	Credit
The Doctor Who Escape Room: Team Third Doctor2025 · K9 (voice)	K9 (voice)
Darkness & Light: The Life of Graham Williams2024 · Self	Self
The Doctors: The Tom Baker Years2017 · Actor	Actor
Longleat '83: The Lost Footage2015 · Actor	Actor
The Five(ish) Doctors Reboot2013 · Self	Self
The K-9 Files2008 · Actor	Actor
Celebration: Doctor Who in 19832008 · Actor	Actor
A Matter of Time2007 · Actor	Actor
Parrot Fashion2007 · Actor	Actor
Getting Blood from the Stones2007 · Actor	Actor
The Sarah Jane Adventures: Invasion of the Bane2007 · K9	K9
A New Beginning2004 · Actor	Actor
Doctor Who: Shada2003 · K9 (voice)	K9 (voice)
Longleat '83: The Greatest Show in the Galaxy2001 · Himself - Host	Himself - Host
K9 Unleashed2000 · Actor	Actor
Where on Earth Is Katy Manning?1998 · Actor	Actor
Downtime1995 · Anthony the D.J.	Anthony the D.J.
Doctor Who: Dimensions in Time1993 · K9 (voice)	K9 (voice)
Search Out Space1990 · K9 (voice)	K9 (voice)
Doctor Who: Remembrance of the Daleks1988 · Dalek Battle Computer (voice)	Dalek Battle Computer (voice)
Myth Runner1987 · Himself	Himself
Whoops Apocalypse1986 · TV Interviewer	TV Interviewer
Doctor Who: The Five Doctors1983 · K9 (voice)	K9 (voice)
The Barretts of Wimpole Street1982 · Henry Barrett	Henry Barrett
K-9 and Company: A Girl's Best Friend1981 · K-9 (voice)	K-9 (voice)
Doctor Who: Warriors' Gate1981 · K9 (voice)	K9 (voice)
Doctor Who: State of Decay1980 · K9 (voice)	K9 (voice)
Doctor Who: Full Circle1980 · K9 (voice)	K9 (voice)
Doctor Who: Meglos1980 · K9 (voice)	K9 (voice)
Doctor Who: The Leisure Hive1980 · K9 (voice)	K9 (voice)
Tarka the Otter1979 · Secretary of the Hunt	Secretary of the Hunt
Doctor Who: The Armageddon Factor1979 · K-9 (voice)	K-9 (voice)
Doctor Who: The Power of Kroll1979 · Dugeen	Dugeen
Merry Christmas Doctor Who1978 · K9 (voice)	K9 (voice)
Doctor Who: The Androids of Tara1978 · K-9 (Voice)	K-9 (Voice)
Doctor Who: The Stones of Blood1978 · K-9 (voice)	K-9 (voice)
Doctor Who: The Pirate Planet1978 · K-9 (voice)	K-9 (voice)
Doctor Who: The Ribos Operation1978 · K-9 (voice)	K-9 (voice)
Doctor Who: The Invasion of Time1978 · K9 (voice)	K9 (voice)
Doctor Who: Underworld1978 · K-9 Mk. I (voice)	K-9 Mk. I (voice)
Doctor Who: The Sun Makers1977 · K9 Mk. I (voice)	K9 Mk. I (voice)
Doctor Who: The Invisible Enemy1977 · K-9 Mk. I (voice) / Nucleus (voice)	K-9 Mk. I (voice) / Nucleus (voice)
HHusband to Mrs. Fitzherbert1975 · Clergyman	Clergyman