Need another branch, at least.
London needs more branches, full stop. Forget the story about the re-jigging of this place for a moment (and making the floor plate area smaller in the process), and think how the branch is over-busy 24/7. As is Covent Garden.
Reason: too few London stores, that's why. In zones 3/4/5 there is next to no branches to pop into, even for a bloody cable.
I just order online from Amazon or some other third-party small things, as I certainly cannot be arsed to trapse into Central London zone 1 (or Shepherd's Bush/White City zone 2, for that matter!) for such trivialities. Even being in zone 3, from a West London POV, there are NO branches from W4 to the outskirts of town, which is quite ridiculous in a city as sprawling as London is.