The latest - short - instalment of the BBC's scifi drama will air as part of charity fundraiser Children in Need this week, with Scotland's David Tennant continuing to play the 14th Doctor after taking over from Jodie Whittaker after a suprise twist.
He's returning to the role he played to great acclaim from 2005–2010, as the 10th Doctor, but will soon make way for his fellow countryman Ncuti Gatwa.
The Sex Education star's first episode proper is expected to be screened over the festive season, when he will become the latest Scot to play a part in the journeys of the Tardis through space and time.
Here are some of the most important, since the first epidode was broadcast in 1963.
9. Michael Sheard
Known to a generation of school children as Mr Bronson in Grange Hill, Michael Sheard was a Scottish character actor who was well known in the world of science fiction. As well as appearing as Admiral Ozzel in The Empire Strikes Back, he has numerous Doctor Who credits. His first appearance was with the first Doctor in 1966's 'The Ark', followed by 1971's 'The Mind of Evil', 1975's 'Pyramids of Mars' 1977's 'The Invisible Enemy' 1982's 'Castrovalva' and 1988's 'Remembrance of the Daleks'. | BBC
10. Michelle Gomez
Glasgow-born Michelle Gomez played rogue timelord Missy - the female incarnation of The Master - from 2014-2018, winning a nominated for the BAFTA for Best Supporting Actress for the role. She has also enjoyed success with parts in the likes of The Book Group, Green Wing, Bad Education, The Flight Attendant and The Chilling Adventures of Sabrina. | Getty Images for ReedPop
11. Neve McIntosh
You may not immediately recognise Paisley's Neve McIntosh from Doctor Who. She appears under thick, green reptilian makeup to play sometime Silurian companion Madame Vastra. On hearing her accent Peter Capaldi reportedly said: "Finally someone who can talk properly". She also played Silurian sisters Alaya and Restac for two episodes alongside Matt Smith's Doctor. | Getty Images
12. John Barrowman
John Barrowman's recurring role as Captain Jack Harkness when Doctor Who was brought back to screens in 2005 was so popular that he got his own spin-off series - Torchwood. As well as acting, he is also an author, presenter, singer and comic book writer. He was born in Glasgow, where he spent the first eight years of his life, before his parents relocated to the USA. He can still do a mean Glaswegian accent though. | Getty Images