Series 1 of K9 premiered in full in 2010 with a run of 26 30-minute episodes in the series -- the longest Doctor Who-related season since Season 19 in 1981, which also had 26 episodes. It is also the first full-season production of a non-BBC-produced spin-off series, and is also the first franchise season to be wholly produced outside the UK, as it was produced and filmed entirely in Australia.
The first episode aired on Disney XD (formerly Jetix) in the UK as a special on 31 October 2009. This was followed by the series in full premiering in Scandinavia in January 2010; most episodes, therefore, had their world premiere months before Australia or the UK. The series debuted in full on Disney XD in the UK and in Australia on Ten on 3 April 2010, only hours before the start of Doctor Who Series 5 in Britain.
As with its parent program, K9 series 1 used individual episode titles for both standalones and multi-part storylines. Two multi-parters were in this series, an initial three-part story leading off the season, and a five-chapter story concluding it. As of 2020, no further seasons of K9 have been produced.
- K9 Mark 2 - John Leeson 
- Starkey - Keegan Joyce
- Jorjie Turner - Philippa Coulthard
- Darius Pike - Daniel Webber
- Professor Alistair Gryffen - Robert Moloney
- June Turner - Robyn Moore
- Drake - Connor Van Vuuren
- Thorne - Jared Robinsen
- Lomax - Peter Kent
- Mina Gryffen - Rachel Everett
- Jacob Gryffen - Joshua McIvor
- Ahab - Brad McMurray
- Vibeka - Sophia Emerson-Bains
- Melaina - Cathy Tucker
- Eleanor Gryffen - Sarah McIntosh
- Nehetka (voice) - Todd Levi
- Geb - Matthew Reimer
- Postman Pat - Gabriel Egan
- Constable - Daniel Murphy
- Miles Barrington Smythe - Corey Robinson
- Yssaringintinka - Cathey Robinsen
- Marcus - Thomas Calder
- Birdie - Josh Norbido
- Birdie (voice) - Peter Kent
- John - Dash Kruck
- Etydion - Tarek Beheby
- Taphony - Maia Mitchell
- Freddie Maxwell - Gareth Harris
- Chuckles - Remi Broadway
- Boris - Michael Donnet
|Series||Release name||Australian release date (region 4)||UK release date (region 2)||North American release date (region 1)||Notes|
|1||The Complete First Series||27 September 2010||11 December 2010
|TBA||Contains the Complete Series 1, Episodes 1-26|
|The Bounty Hunter||27 September 2010||n/a||n/a||Contains Series 1, Episodes 1-6|
|Alien Avatar||1 December 2010||n/a||n/a||Contains Series 1, Episodes 7-12|
|Series 1; Volume 1
|n/a||31 January 2011||30 March 2011||Contains Series 1, Episodes 1-12.|
|Series 1; Volume 2
|n/a||18 April 2011||18 April 2011||Contains Series 1, Episodes 13-26.|
|Ultimate Collectors Edition||n/a||11 June 2012||TBA||Contains the Complete Series 1, Episodes 1-26|
The Complete Book of K-9, a piece of non-fiction following the story of K-9 through all four models, crossing over from Doctor Who, K9 and Company, The Sarah Jane Adventures and of course K-9 itself was advertised. A tie-in called The K-9 Storybook was going to be released in 2011 containing behind-the-scenes extras, short stories, comic strips and other material from the live-action series, Instead the The Essential Book of K9 was introduced. It included K9's complete story of Doctor Who, special features, exclusive photos, stories and comic strips from some classic names including Bob Baker. It was released in July 2015. There was one K-9 Mark 2 figurine made, released in 2012.
In 2009, Shayne Armstrong and SP Krause, writers and developers of the series for television, won the John Hinde Award for Science-Fiction at the Australian Writers Guild AWGIES for their script for the episode The Fall of the House of Gryffen. The episode was also a nominee in the category for Best Children's Television in that year.
In 2009, Shayne Armstrong and SP Krause were also nominated as finalists in the Queensland Premier's Literary Awards for Best Television Script for the episode Regeneration.
In 2010, Tony O'Loughlan, director of photography for the show, won two bronze awards at the Queensland and Northern Territory Cinematographer Awards for his work on the episodes Angel of the North and The Eclipse of the Korven.
Series VFX director and director of 4 other episode David Napier was nominated for Best Direction in Children's Television at the 2010 Australian Directors Guild Awards for episode 26 Eclipse of the Korven.
- Doctor Who News Page Report
- Throng - Series Premiere of K9 on Ten accessed 11th October 2010
- The Doctor Who News Page - Bookmark and Share K9 - UK and Australian premier on 3rd April accessed 11th October 2010
- Doctor Who Magazine issue 411 reports that John Leeson returns to voice K9 for all 26 episodes