Nobody likes a show-off, but I haven't spent 27 years obsessing about this programme and the past seven psychotically reporting every detail of its production without learning a few secrets. New to BuzzFeed, but my Guardian archive of current episodes can be found here, and a run through the classic series over here.
34. Bonnie Langford.
Played 80s companion Melanie Bush, and worth it for her bio 'Red Hair and High Kicks' alone. Bonnie mainly tweets about her musical theatre work, but will still post the occasional bit of Who love as above.
33. Doctor Who TV.
One of the better-natured fansites, quick to round up breaking news, and post compelling longform essays into the bargain.
32. Ian Levine.
One of the most notorious figures in fandom, Levine was actually a pioneer for Hi-NRG dance music as a DJ and producer, but his first love was always Who. He became a continuity consultant to the production team in the 80s, and was responsible for the retrieval of several lost episodes. Nowadays, he can usually be found raising armies on Twitter for any and every affront has been made onto fandom by the BBC themselves (which is most things lately).
31. Nicola Bryant.
Actress who played companion Peri opposite the Fifth and Sixth Doctors and continues to appear in Big Finish audio plays. Seems to see Twitter as wonderful playground where everyone can be wonderful to each other the whole time. And why not?
30. Paul Lang.
Designer of several books including the forthcoming retrospective The Doctor: His Lives And Times, contributor to various DVD commentaries and founder of the Lowculture trash TV site. Though can mostly be found tweeting about boys and The X Factor these days.
29. Louise Jameson.
Played noble savage warrior Leela Of The Sevateem opposite Tom Baker, and appears alongside side him to this day, despite them not having got along at the time. Is such an ambassador for the show she even made an appearance at gay Doctor Who social collective The Sisterhood Of Karn and ended up going on a lads' holiday with one of the organisers. What a woman.
28. Darren Scott.
Editor of Gay Times seemingly on a one-man mission to turn the title into a Doctor Who fanzine, with some degree of success. Will usually be found tweeting about his pug (himself something of an internet celebrity, having starred in Middle Class Problems and been babysat by Jo Grant actress Katy Manning).
27. Lee Binding.
Designer of the 'Iconic Movie Style Posters' that greeted each episode of the recent run, as well as the one you can see at the top of the page. Tweets about Doctor Who, but like many others on this list, a lot about boys and The X Factor as well.
26. Chris Allen.
Webmaster of BBC Worldwide's excellent 50th anniversary site. But yes, also one of the mob mentioned directly above.
25. Chris Chapman.
Producer and director of several of the excellent DVD extra documentaries on the current range. Recently he pulled together the survivors from the controversial shoot on William Hartnell's final story The Tenth Planet and took the cast of The Mind Of Evil back to the Dower Castle location shoot. Tweets about neither boys or The X Factor.
24. Freema Agyeman.
Actress who played companion Martha Jones, so legend. Good fun, but when she has a new project on air she can be known to clog up your feed with talk of it rather a lot
23. Peter Davison.
The Fifth Doctor! Entertaining, but having joined up in Autumn 2012, has not tweeted since June 2013 so may have given up now.
22. Neil and Sue Perryman.
Writer and Who fan Neil convinced his wife Sue to an experiment where they would watch every single surviving episode in order and she would try to understand his obsession. The results became the hilarious and touching blog Adventures With The Wife In Space. A book of the experiment will be released in November.
21. Paul Vanezis.
A key figure in the Doctor Who Restoration Team, and one of the main players in the worldwide search for all the missing episodes lost in the 60s. Depending on who you believe, their work could be about to yield some spectacular results...
20. Janet Fielding.
Played bolshy companion Tegan Jovanaka opposite the Fourth and Fifth Doctors, before quitting acting to become an agent and activist for women in film and TV. After years of reluctance, has returned to the Doctor Who family, appearing in audio plays and attending conventions. Her handle references her character's nickname of the 'Mouth On Legs'.
19. Nicholas Briggs.
The voice of the Daleks and the Cybermen in the TV show, and boss of Big Finish, the company that produce regular audio plays starring all the surviving classic-era Doctors.
18. Paul McGann.
The Eighth Doctor, doomed to just one screen appearance after his TV movie was not picked up to pilot, but enjoyed a long career in audio and comic book. Treats the whole thing as quite a hoot, as per the cheeky tweet above.
17. Toby Hadoke.
Stand-up comic Toby's one-man show Moths Ate My Doctor Who Scarf nailed the agony and ecstasy of fandom and earned him a place in the family. Currently hosts documentaries and is on a mission with his Who's Round podcast to get a first-hand anecdote from every single story throughout the 50th year.
16. Gareth Roberts.
Writer of several acclaimed New Who stories like The Shakespeare Code and The Lodger. Most recently won across-the-board acclaim for his literary adaptation of the unfinished Douglas Adams story, Shada. And yes, tweets a lot about X Factor as well.
15. Sophie Aldred.
Played Ace, the single greatest companion of the 80s, and who remains one of the most generous ambassadors for the programme to this day. Like Nicola Bryant, spends a lot of the time making gags with what now looks like an online social club of former companions.
14. Colin Baker.
The Sixth Doctor. Still frustrated about the costume he was forced to wear to this day. Tweets can often resemble a slightly bufuddled stream of consciousness, although that may be just from since he went on I'm A Celebrity...
13. Billie Piper.
Doesn't tweet that much actually, but come on, this is Rose bloody Tyler.
12. Murray Gold.
The man responsible for the music of Doctor Who (apart from, obviously, that bit). His tweets are never less than poetic, without always making a whole lot of sense either.
11. Sylvester McCoy.
The Seventh Doctor. Between that and his current role as Radagast The Broon in The Hobbit franchise, his feed resembles a bizarre and magical storm of fandoms colliding.
10. Blogtor Who.
Probably the fastest and funniest Who news source on the internet right now. Certainly the one that tweets the most. Although we miss his hilarious episode podcasts and we've told him as much to his face.
9. Chris Chibnall
Writer of recent episodes like Dinosaurs On A Spaceship, The Power Of Three and former executive producer of Torchwood. Created something you have may have heard of called Broadchurch. Despite such greatness will never live down a 1986 appearance on audience review show Open Air when he berated producers for not making Doctor Who dark and adult enough.
8. Classic Doctor Who.
BBC Worldwide's official source for everything to do with the classic series. It is quite a big year for that sort of thing, as you may have heard.
7. Neil Gaiman.
Godhead of fantasy fiction who was tempted by over by Steven Moffat to write for Who with episodes The Doctor's Wife and Nightmare In Silver. But a good half of his tweets are promoting his wife Amanda Palmer's music career.
6. Karen Gillan.
With a forthcoming role in Marvel's Guardians Of The Galaxy, the Amy Pond actress is on her way to becoming proper Hollywood famous. Thankfully that hasn't gone to her head yet, from her Twitter feed she's still as down-to-earth and mad-as-a-box-of-frogs as we remember.
5. Tom Spilsbury.
Editor of Doctor Who Magazine. The official nature of the role means his feed veers on the vanilla side, but the information is always going to be on the money.
4. Katy Manning.
Actress who played Third Doctor companion Jo Grant in the 70s, and remains the most fabulous of all the former companions. Caused controversy after leaving by posing naked with a Dalek on the cover of Girl Illustrated. Her feed is a world of chaos, and she tweets about Darren Scott's pug almost as much as he does.
3. The show itself.
With all of these people to follow, it can be easy forget that the show itself has a feed of its own. And now that TV channels are taking social seriously, this is one of the best. They're very good on anniversaries.
2. Edward Russell.
Brand Manager of Doctor Who, which means he's responsible for pretty much everything about the programme apart from what's actually on screen. can be found rubbishing newspaper reports and posting about 80s pop music. By night he has a secret pop career of his own which you might enjoy.
1. Mark Gatiss.
The highest-ranking Who writer on the whole of the internet, because Moffatt's never coming back. But let's face it, you should be following Gatiss already.