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 previous headquarters was destroyed during the Master's Dalek Plan when Tegan Jovanka and Kate Stewart initiated the structural termination system to implode the building and entomb the Cybermen lead by a cloned Ashad. (TV: )

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.

However, the UNIT HQ seen in is located where the Leadenhall Building is in real life; the two towers next to it, as seen when Ace looks over the side, are where the UNIT HQ is located in The Star Beast. This presents a minor continuity issue, as the Leadenhall Building is seen in London's skyline in The Star Beast (set in late 2023) despite its presumed demolition prior to the events of The Power of the Doctor (set in 2022).