WHAT IS CANON?
To Whovians, the immense body of work that is more than fifty-three years worth of Doctor Who is open to interpretation. What exactly do we as fans consider to be part of the resultant 'Whoniverse'? Frankly, this is a personal choice, one which will be continually debated in every forum open to fans.
Unlike the makers of Star Wars and Star Trek, the BBC has never made an official announcement on the subject of Doctor Who lore - why should it, the franchise keeps developing, and is too vast to easily quantify.
Whovians will always want a complete narrative, but this ever-evolving series makes that virtually impossible, but everything within the Whoniverse can co-exist, or be made to fit anyway.
The consensus amongst fans is that true canonicity in the Whoniverse is defined purely by those adventures broadcast on TV by the BBC - which must now
encompass the tie-in stories of The Sarah Jane Adventures, Torchwood, Class,
Prequels and Tardisodes.
Everything outside the medium of television is therefore NOT canon. Yet the list of officially sanctioned Doctor Who spin-offs is almost endless, and continues to grow. Since 1964, there has been all manner of story-telling that endeavours to contribute to the original programme's mythos. We've witnessed features films, plays, radio, audio, novelisations, comic-strips, books, magazines, collector-cards, charity specials, RPG, computer games, webcasts, exhibitions, DVD extras, even a live arena tour, and a musical, not forgetting the ever-expanding Big Finish ranges, and the fan-fiction seen via convention stages, fanzines, websites, and independent films (et al, etc, ad nauseum!)
In the so-called 'wilderness' years of the 1990's, between the 'classic' and new
runs, fans welcomed any form of fresh Doctor Who, so let us embrace our show
in all it's incarnations in that same spirit.