David Hockney: exclusive interview with the world's most expensive living artist

We talk to Hockney about Van Gogh, printmaking and the Bayeaux Tapestry but also about Portrait of an Artist (Pool with Two Figures), which broke auction record this week. We also look at the personal heartbreak behind the painting with Lawrence Weschler and analyse the trends of the New York auctions so far with Melanie Gerlis.