This book is an account of the land law of England and Wales written in the Clarendon style: as a letter to a friend, with a minimum of footnotes and statutory material. It explains the origins of land law in the feudal system, its transformation by the legislation of 1925, and the modern regime in which registration is the key to the validity and enforceability of interests in land. The unique role of the trust in English law is explored, and the many complications that can arise where ownership of land is shared (whether concurrently or consecutively). Themes of the book include the management of complexity in land law, and the tension between dynamic and static security. The law of mortgages, leases, easements, and covenants is explained. Recent decisions of the Court of Appeal and the Supreme Court are discussed, as are reform proposals by the Law Commission.