Baker Street tube station

The Baker Street tube station was a London Underground station on Baker Street. (AUDIO: Lost Property)

According to crime boss Raymond Gallagher, Baker Street was the next stop south of Marlborough Road. (AUDIO: The Crimes of Thomas Brewster)

Midge, an alien acquaintance of the Doctor, ran the Underground lost property office near the station, where he stored various artefacts left by the Doctor, along with Jim's inventory elsewhere in London. (AUDIO: Lost Property)

Behind the scenes
In the real world, Transport for London's lost property office moved out of Baker Street and onto Pelham Street, just south of the South Kensington tube station, on 21 October 2019, soon before Lost Property's setting, but some time even after production had begun. This office was located by the Baker Street station for 86 years.