Elton John has no address. Visitors to his home are given three names: the name of a house, the name of a hill, and the name of a town, which is near Windsor, as in Windsor Castle, where King Charles III lives. Admission is granted via a big iron gate that swings silently open to a crunchy driveway, a small turreted gatehouse, a pond with geese, hedgerows, wordless men with wheelbarrows and Wellingtons and, after a little walking, a three-story red-brick Georgian compound.