There’s just one day to go until Doctor Who 50th anniversary special - the Day of the Doctor hits television screens across the globe.

Set to be to be simulcast worldwide in over 75 countries, the sci-fi special will see three incarnations of the Time Lord make an appearance, with outgoing Doctor Matt Smith set to be joined by David Tennant's Tenth Doctor and John Hurt making his debut making his proper as the War Doctor.

However, fans will have to wait to see Peter Capaldi's debut as the Twelfth Doctor until he replaces Matt Smith after the Christmas special later this year.

Google have already gotten into the spirit of things by created their biggest and most complex Google doodle yet with an interactive computer game.

We’re also marking the occasion here on, with our pick of Doctor Who related records below.

To kick off, here’s Rob Hull from, Doncaster in the UK, who is the undisputed world’s biggest fan of Doctor Who's arch nemeses, the Daleks.

As of 14 May 2013, Rob’s Dalek collection runs to 1202 examples and includes several rare pieces as well as a full-size working model, which, at the press of a button, issues the famously menacing battle cry: “Exterminate!”

Sticking with the Doctor’s cyborg enemy, the largest Dalek sculpture is a 35-ft (10.6-m) construction made primarily from straw which was created earlier this year by Snugburys ice cream company to mark the anniversary.

The Dalek took approximately 700 man hours to complete and used approximately 6 tons (6.09 tonnes) of straw and 5 tons (5.08 tonnes) of steel.

Tomorrows special looks set to be the last time Matt Smith will step out of the Tardis as the Doctor. Born on 28 October 1982, Matt was just 26 when he filmed his first scenes as the Time Lord, making him the youngest person to play Doctor Who. At the other end of the scale, the oldest person to play Doctor Who was William Hartnell, who played the part from the age of 55 to 57. He last reprised the role in 1973, aged 65.

The much-loved BBC show has the distinction of being the most successful sci-fi TV show of all time, based on longevity, DVD sales, views on BBC’s iPlayer and publishing spin-offs. This eclipses the original Star Trek series, which has had numerous spin-offs (such as The Next Generation and Voyager) that are not a genuine continuation of the same show.

Its also the longest running science fiction TV series of all time. As of 18 May 2013, a total of 798 episodes of Doctor Who had been aired. This total encompasses 239 story arcs and a full-length TV movie but does not include spoofs, spin-offs or webisodes.

The official Doctor Who books – including novels, novelizations of TV episodes and “quick reads” – also hold the record for largest fiction series based on one principal character. Some 472 titles have appeared since the mid-1960s.

The show can also lay claim to the longest-running TV tie-in, with the accompanying Doctor Who Magazine. Originally launched as Doctor Who Weekly on 11 October 1979, the magazine eventually went monthly at issue 44. Its tenure is all the more remarkable due to the fact that for 16 years of its 31-year run there was no TV series in production.

The show’s fanbase is notoriously loyal, the largest Doctor Who fanclub is The Doctor Who Appreciation Society, which began in May 1976.

Over its 50 years, the most popular Doctor Who story is 1984’s “The Caves of Androzani” which has received an average user review of 9.3/10 on, and was voted by readers of Doctor Who Magazine as the Time Lord's best ever adventure.

The epic tale recounts the last days of the fifth Doctor (Peter Davison), who, by the end of the serial, is poisoned and forced to regenerate – into the sixth Doctor (Colin Baker) – to save his life. The classic four-parter narrowly beat the 2007 episode “Blink”, starring tenth Doctor, David Tennant.

In terms of TV shows, the most prolific Doctor Who is Tom Baker, who starred in 173 episodes (seasons 12–18), a figure more than any other actor. A former monk, Baker was working on a building site when he received the call from the BBC. Famous for his Doctor’s lengthy scarf and wild hair, he revitalized the series and lasted seven years. In terms of total output – including audiobooks, TV shows, DVDs, novels and comics – the busiest Doctor was the tenth (David Tennant, UK), with over 342 appearances.

TV’s least prolific Doctor Who was the eighth (Paul McGann, UK), who appeared just once, in a 1996 TV movie. Across all media, the fewest appearances to date were made by the ninth Doctor (Christopher Eccleston, UK), with only 25 outings.