London has always consisted of a series of overlapping but completely separate quarters. The ton, living in Mayfair, found it impossible to envisage anything farther east than the Haymarket. Beau Brummell spoke for all of them when, in reply to in invitation to dine in Bloomsbury, he accepted, ‘providing my coachman can find his way there.’
Introduction to Harriette Wilson’s Memoirs, ed. Lesley Blanch, 2003.