It was Sunday morning, and my restless nature meant I had to get out of the house and onto the tube. I decided to get off at Hampstead, one of my favourite hill-based places for a little bit of sketching and shop-going. I love Hampstead in the morning. People going out for breakfast, a tour guide bellowing history to a group of Americans outside the tube station, the little lanes off the High Street filled with cute houses. One of my life’s ambitions was that if I ever got rich I’d live in Hampstead, but you have to be really quite rich to do that nowadays I think. The other ambitions are still a place in Highgate and a place in the South of France, along with California of course, and I have at least lived in those places at some point along the way. I stood across the street…