At Christmas, author and adventuress Alexandra Tolstoy sets off from her Oxfordshire home on a house-buying expedition to Tashkent in Uzbekistan. "It's one of the most beautiful and unspoilt parts of the world," she tells me. "You can buy a property in an acre or two of land for about $5,000 [£2,900] and spend double that doing it up. Tashkent is only about five hours away by air from Britain." Alexandra, a distant cousin of War and Peace author, Leo Tolstoy, runs trekking expeditions there with husband, Shamil, a Tartar horseman.