Poundbury is the King’s idealised town in Dorchester, built on his land to his specifications: the town that sprung out of his head. (‘My dream,’ says Harry Enfield in The Windsors, ‘was always to build a mixed-used residential suburb on the outskirts of Dorchester.’) It is so fascinating that I dream, briefly, of moving in for the completeness of the vision – who doesn’t want to live inside art? – and the portrait of the British class system in housing.