Bristol was a city in and ceremonial county in England. It was home to the Twelfth Doctor's companion, Bill Potts. The Doctor's own place of work for several decades, St Luke's University, underneath which he hid a mysterious vault, was located in Bristol.
Bristol's landmarks included Clifton Suspension Bridge. (PROSE: Reckless Engineering) The city was known to have had at least two universities: St Luke's University (TV: The Pilot) and Bristol University. (PROSE: Rags)
Totterdown was a district of Bristol, on a steep hill south of the river, which was largely damaged by bombing in World War II. Against the district's brightly coloured houses remained an "eccentric wasteland". (PROSE: Rags)
Local businesses included Redcliffe Lettings and The Fabric Mill. (TV: Knock Knock) The Money Tree was a wine bar in the city's financial district. The Ragged Staff was the name of at least three pubs in Bristol. (PROSE: Rags) Debbie's Kebab Chalet was located on or near the St Luke's campus. (AUDIO: Dead Media)
Bill Potts lived in at least two homes within the Bristol area. The first was a flat she shared with her foster mother, (TV: The Pilot) and the second, although for only a short time, was 11 Cardinal Road. (TV: Knock Knock, Extremis)
In the 1970s, the Unwashed visited a Bristol cemetery as part of their Unwashed and Unforgiving Tour. Revellers were led by the Ragman to kill everyone at The Money Tree bar. They were later stopped by the Third Doctor. (PROSE: Rags)
In 2001, Nimrod came to Bristol to kill William Moore. He attended a play which had been directed by Moore and stayed after the audience and actors had left. He confronted Moore on the stage and shot a stake through his heart. (PROSE: Project: Valhalla)
In 2008, Jen vanished in Bristol after playing Combat 3000. She had been kidnapped by Uvlavad Kudlak but was saved by Sarah Jane Smith and her friends. After this she returned to Earth. (TV: Warriors of Kudlak)
The Twelfth Doctor accidentally landed the TARDIS in Bristol when trying to get Clara Oswald home for a date with Danny Pink. After the TARDIS was shrunk, they encountered and defeated the Boneless, who had killed several local humans. (TV: Flatline)
The Twelfth Doctor later returned to Bristol with Nardole, where they spent a number of decades guarding a vault beneath the campus of St Luke's University. It was here, in 2016, where he first encountered Bill Potts. (TV: The Pilot)
In another alternate timeline, the Eighth Doctor, Anji Kapoor and Fitz Kreiner visited a post-apocalyptic Bristol in 2003. The ruins of the city were inhabited by Wildren. The Doctor travelled back to 1843 and was able to revert events back to the correct timeline. (PROSE: Reckless Engineering)
Behind the scenes
Though it's possible that a real world location doesn't exist in the same geographic space in the Doctor Who universe, such cases are few and far between. Thus, the map at right is probably a good indicator of the DWU location of Bristol.