‘Correct Address: Old Compton Street, London, W.1. Please use the correct District Number’, a 1960 poster by Peter Edwards published by the General Post Office (GPO). It’s evening on Old Compton Street in Soho with two women in the foreground and cars, more people, a church, billboard posters, shop signs and lit-up windows in the background under a pink sky. This poster is in the shop window at the moment, nicely paired with some orange and pink dahlias, and we put it on Instagram yesterday.