finalproblem:

suicidechips:

why does sherlock get into a cab in tst and say “mall, please” and then turn up at mycroft’s office in the next scene??

The Mall is a road in London.

The location they chose for the exterior of the Diogenes Club in the show is The British Academy, and The Mall runs right behind that building.

Back when Mycroft brought Sherlock home in The Empty Hearse, the show cut from Mycroft in his office to the Diogenes Club exterior.

The implications seem to be:

1) In their fictional world, the Diogenes Club is located in the same place as The British Academy is in our world.

2) Mycroft’s bunker-like office (and quite possibly the similarly-styled cell Jim Moriarty was held in) is probably located somewhere underneath the Diogenes Club.

The location of the Diogenes Club near The Mall may actually help explain why Mycroft has a strange bunker office. The building is right by an area with a number of known underground government citadels, tunnels, etc. The Admiralty Citadel, for example, is just on the other side of The Mall. And the building’s so close to the known portion of the Q-Whitehall facility that the writers wouldn’t even have to try hard to claim the Diogenes bunkers were part of the expansion of those tunnels that’s still locked up as a secret in the National Archives for another decade or so. (And all this reminds me I should really finish that post series…)

---

TL;DR version: Sherlock asked to be taken to The Mall because it’s a convenient drop-off point for the Diogenes Club, home of Mycroft’s office.