Hmm... and thinking of Reading kind of brings me in a commodius vicus of recirculation to Caversham; and while I cannot speak for the BBC's monitoring station there, I *can* honestly state that it was possible to enter Bush House via the staff entrance at pretty ungodly hours at the time (there used to be bunks down in the building that were designed for foreign-language BBC staff, and at the time they did double duty as a very handy place to doss down). Can't remember if there were lockers but I'll wager there were.