This chapter concludes the analysis in the book by focusing on the five questions of consistency introduced in Chapter 1. The first is the question of consistency between party autonomy in choice of forum and choice of law. The second is the question of consistency between party autonomy in contract and in non-contractual relations. The third is the question of consistency between the choice of non-state forums or law and the choice of state forums or law. The fourth is the question of consistency between party autonomy in practice and party autonomy in theory. The fifth is the question of consistency between legal systems. In respect of each of these questions, the analysis in the book identifies a degree of inconsistency and a variety of approaches, and thus that the idea of party autonomy as a unifying principle of private international law may be more open to challenge than is sometimes contended. The book concludes with a final appraisal of the current and prospective role of party autonomy in private international law, and its significance in the global legal order.