In message , John Rowland
writes

Which bus company's name is obscured? Surely London Country Buses didn't
have a depot a couple of miles from Tower Bridge. Anyway, the gate of the
depot has an arch which looks too low for double deckers.

Possibly a Green Line coach depot? I'm not aware of one there (most were
well outside central London), but it would have been well-placed to
start the London end of the services that used the Minories terminus -
720, 721, 722 and 723 (the last of which ran along Commercial Road on
its way to Tilbury).

--
Paul Terry