UNIT HQ, City of London

By late 2023, the branch of UNIT that operated in the United Kingdom had its headquarters (TV: ) located in the City of London, near the Gherkin. (PROSE: ) It had a helipad. (TV: )

History
The UNIT HQ was among London's skyline by the time the Meep's attempted Destruction of London was thwarted by the Fourteenth Doctor, Donna Noble, and her daughter Rose. (TV: )

Behind the scenes
This UNIT HQ, going off the on-screen geography seen in, appears to be located the financial district of the City of London, specifically the area surrounded by Fenchurch Avenue, Billiter Street, , and Leadenhall Street, occupying the position of the , , and the Moniker.

Therefore, the UNIT HQ is opposite the northwards,  to the east, the Garden at 120 to the south, and the  to the west.