Bryan McAllister’s personal reference notebook
July 30, 2026Short & citedBlog
Civic Viewpoint.
A quiet encyclopedia with a personal desk
Kept by Bryan McAllister — short guides, clear facts, and the Canadian angle when it matters.
Screen & Stage • Series

Doctor Who

Doctor Who is a British science-fiction television series about the Doctor, a time-travelling alien who explores time and space in the TARDIS, often with human companions.

Updated July 30, 20261 min readCited sources

Doctor Who is a British science-fiction television series that follows the Doctor, a time-travelling alien, on adventures through time and space. The show originally aired from 1963 to 1989 and returned for a modern revival starting in 2005.

What it is

Doctor Who centres on the Doctor, a Time Lord from Gallifrey, who travels in the TARDIS—a time machine that looks like a blue police box. Stories often pair the Doctor with human companions, blending science-fiction and historical settings. The series has a long-standing Canadian fan base and is part of the Anglophone pop-culture landscape.

Key details

The programme first aired on the BBC in 1963 with William Hartnell as the First Doctor. As of 2025, 15 actors have played the role on screen, including Ncuti Gatwa as the Fifteenth Doctor. Gatwa’s final episode, "The Reality War," aired on 31 May 2025, and reports indicate the character regenerated afterward. The revival series began in 2005 and continues.

Why it matters

Doctor Who has become a cultural institution in the UK and globally, including in Canada, where it has a dedicated fan following. The regeneration concept allows the show to reinvent itself, keeping the series fresh across decades. The 2025 departure of Ncuti Gatwa marks a transition point, with the character regenerating into an as-yet-unknown new Doctor.

In short

  • Doctor Who began in 1963 and was revived in 2005.
  • The Doctor is a Time Lord who regenerates, allowing different actors to play the role.
  • 15 actors have headlined as the Doctor on screen as of 2025, with William Hartnell first and Ncuti Gatwa most recent.
  • Ncuti Gatwa’s tenure ended on 31 May 2025, with the character regenerating.
Canadian angle

Doctor Who has a long-standing Canadian fan base and has been broadcast and discussed widely in Canadian media; it is also part of the broader Anglophone pop-culture landscape familiar to Canadian viewers.

Quick questions

Who is the current Doctor Who?
As of the latest sources, Ncuti Gatwa most recently played the Doctor, leaving the role after his final episode aired on 31 May 2025.
How many Doctors Who are there?
There have been 15 on-screen Doctors so far, counting Ncuti Gatwa as the Fifteenth Doctor.
When did Doctor Who start?
Doctor Who began broadcasting on the BBC in 1963.

Sources

  1. Wikipedia — https://en.wikipedia.org/wiki/Doctor_Who
    Supports: Original 1963 start, revived 2005 era, premise, and count of actors who have played the Doctor.
  2. Wikipedia — https://en.wikipedia.org/wiki/Fifteenth_Doctor
    Supports: Ncuti Gatwa as the Fifteenth Doctor, tenure, and 2025 departure.
  3. Doctor Who (BBC) — https://www.doctorwho.tv/news-and-features/ncuti-gatwa-says-final-farewell-to-the-tardis-as-the-fifteenth-doctor-regenerates
    Supports: Gatwa’s final episode and regeneration in 2025.
  4. BBC News — https://www.bbc.com/news/uk-61371123
    Supports: Gatwa casting announcement and identification as the 14th actor to play the Doctor at the time of announcement.
  5. BBC News — https://www.bbc.com/news/entertainment-arts-23570354
    Supports: William Hartnell as the first Doctor and the show’s long-running BBC context.
  6. Wikipedia — https://en.wikipedia.org/wiki/List_of_actors_who_have_played_the_Doctor
    Supports: Count of actors who have portrayed the Doctor and listing of William Hartnell as the First Doctor.