Birmingham was a city in England.
Harwood's Haulage, Rhys Williams' employer, (TV: Kiss Kiss, Bang Bang) operated out of Birmingham, Sheffield, Ipswich, Carlisle and Cardiff — according to signage on their lorries and their website. (TV: Meat)
In 2017, a comic convention was held in Birmingham which was attended by Val Kent and Sonny Robinson, the creators of Time Surgeon. The Twelfth Doctor kidnapped Kent and Robinson from the convention center and took them on a series of adventures through time and space. (COMIC: Invasion of the Mindmorphs)
George Litefoot owned an Oriental fowling piece that had actually been made in Birmingham. The Doctor saw this as a hallmark of quality manufacturing and used the duck gun to kill a giant rat in the London sewers. (TV: The Talons of Weng-Chiang)
The Tenth Doctor offered June a lift back to Birmingham in the TARDIS after she missed her train. (PROSE: The Slitheen Excursion) According to the Eleventh Doctor, the collection plate of the Mandalax Tide was the size of Birmingham. (COMIC: Pay the Piper)
Behind the scenes Edit
Real world location
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 Birmingham.