Doctor Who Magazine is a magazine devoted to the British science fiction television series Doctor Who. Launched in 1979 as Doctor Who Weekly, the magazine became a monthly publication the following year. With 13 issues a year, as well as producing triannual deluxe Special Editions (2002–) and Bookazines (2013–), the publication features behind the scenes articles on the TV show and other media, as well as producing its own comic strip. Its founding editor was Dez Skinn, and the longest-serving editor was Tom Spilsbury who served from 2007 to 2017. He was succeeded by Marcus Hearn, who took over from Spilsbury in July 2017. The incumbent editor is Jason Quinn, who took over from Hearn in September 2023. DWM is recognised by Guinness World Records as the longest running TV tie-in magazine, celebrating 40 years of continuous publication on 11 October 2019. The magazine published its 600th issue on 1 February 2024.

"Turn Left" is the eleventh episode of the fourth series of British science fiction television series Doctor Who. It was written by showrunner Russell T Davies and broadcast on BBC One on 21 June 2008.