Preston

Preston was a city in the north of England. (AUDIO: Blood of the Daleks) Nearby towns included Blackpool to the west. (TV: The Categories of Life) It appeared to be best known for its rail and bus services. (PROSE: Invasion of the Cat-People, AUDIO: Blood of the Daleks)

James I suggested recompensating the people of Bilehurst Cragg and moving them "to somewhere nicer, like Preston". He suggested it be portrayed as a precaution against plague, which wasn't really a lie. (PROSE: The Witchfinders)

The city was a key point on British railway lines, at least in the 20th century. Trains from London to Carlisle and Sellafield transferred at Preston. (PROSE: Invasion of the Cat-People)

Two motorways intersected at Preston, one of which went north, while the other ran west and terminated at Blackpool. (TV: The Categories of Life)

The Eighth Doctor attempted to drop Lucie Miller off in Preston after deducing that she came from the north of England. He understood that the city had a very good bus service. However, the TARDIS bounced off it and instead materialised on Red Rocket Rising. (AUDIO: Blood of the Daleks)

Preston appeared on Mary Cooper's map of overflow camps in and around Wales. (TV: The Categories of Life)

Behind the scenes
In the real world, the city of Preston is home to the University of Central Lancashire. In 2019, staff, students and alumni from the university worked together to recreate Mission to the Unknown.