This book is a collection of papers given at the sixth biennial conference at the University of Reading held in March 2006, and is the fourth in the series Modern Studies in Property Law. The Reading conference has become well-known as a unique opportunity for property lawyers to meet and confer both formally and informally. This volume is a refereed and revised selection of the papers given there. It covers a broad range of topics of immediate importance, not only in domestic law but also on a worldwide scale.