I. Introduction Issues of priority are at the centre of English land law. Where a plot of land in which a third party has an interest is transferred from one party to another, a conflict arises between this third party and the transferee: whose interest has priority? If push comes to shove, can the transferee prevent the third-party interest holder from exercising her right, or is the third-party interest-holder entitled to enjoy her interest in the face of the transferee’s objections? The...