I went last night to hear Anya Hindmarch, one of the Trustees of the Royal Academy Development Trust, talk about the business of making and selling luxury handbags internationally.   She made it sound charmingly straightforward as the daughter of entrepreneurial parents, travelling out to Florence aged eighteen and ordering some duffel bags which she sold through a feature in Harpers and Queen, opening a shop in Walton Street, and then gradually and incrementally expanding internationally, so that now she has shops all over the world.   I assume that she must have had a great deal more steeliness and determination than she allowed to appear.