Thirteen years ago we shared an office building with a large international bank. A common lift connected both businesses to the underground car park. Here I once overheard one of the bank employees describing our offices: ‘And you know what else they have up there…’ He spoke in the kind of wide-eyed, aghast tone you might have expected if he were about to reveal an opium den or a branch of Stringfellows: ‘They’ve got a bar.