Morris on The Conflict of Laws has, for more than half a century, been one of the leading titles on the conflict of laws, covering all the main aspects of the subject, also known as private international law. It traces the development of the ideas and fundamental principles of the subject and examines the current practice of the English courts.

The eleventh edition has been fully revised to incorporate the many developments in the field. Features of the new edition include:

• Reflection of the changing patterns in the English rules of the conflict of laws as the courts continue to deal with the new position following the departure of the United Kingdom from the European Union
• Extensive changes in the material on jurisdiction, following the rejection of the UK's application to rejoin the Lugano Convention, including the Hague Choice of Court Convention and the further development of the English rules as to service out of the jurisdiction
• New material on the recognition of foreign judgments with the coming into effect in the United Kingdom of the Hague Judgments Convention
• Substantial changes in the field of international family law, where the Hague Child Protection Convention has become a central feature of English practice, and continued attention to developments relating to the Rome Regulations, the assimilated EU legislation central to many aspects of international commercial law
• A greater emphasis on the work of the Hague Conference on Private International Law, with many of its conventions now being reflected in English law, and its work having assumed greater importance as the influence of EU law has declined
• Inclusion of new case-law, including 13 decisions of the UK Supreme Court, reflecting the growing practical importance of the subject
• Thorough reworking, including on varied topics such as the act of state doctrine and parentage, designed to help the reader to achieve a critical understanding of the subject

• Explains the rules, principles and practice that determine how the law of England and Wales relates to other legal systems.
• Volume 1 deals with general principles, the effects of the withdrawal by the United Kingdom from the European Union, foreign affairs law, protective measures and international judicial cooperation, jurisdiction of English courts, recognition and enforcement of foreign judgments and international arbitration.
• Volume 2 covers family law, property law, succession and trusts, corporations and bankruptcy, contracts, torts, unjust enrichment and equitable claims, and foreign currency obligations.
• Includes a new Part containing detailed analysis of Foreign Affairs and the Conflict of Laws, including expanded coverage of important developments in this area.
• Includes detailed treatment of the Hague Convention on Choice of Court Agreements 2005.
• Family law coverage includes important developments in respect of same-sex marriages, civil partnerships and surrogacy.
• A Companion Volume explains in detail the transitional provisions relating to the withdrawal by the United Kingdom from the European Union and the relevant EU legislation in areas where those transitional issues will remain relevant for the foreseeable future, including on lis pendens, recognition and enforcement of foreign judgments, family law and insolvency.

Dicey, Morris & Collins on The Conflict of Laws is renowned worldwide as the foremost authority on private international law. It explains the rules, principles and practice that determine how the law of England & Wales relates to other legal systems. Its commentary, Rules and illustrations, with detailed reference to international conventions, legislation and case law, ensures it remains an indispensable tool for practitioners engaged in cross-border matters. Across two volumes and a Companion Volume, it contains high-quality and detailed analysis. Volume 1 deals with general principles, the effects of withdrawal by the United Kingdom from the European Union, foreign affairs and the conflict of laws, procedural issues relating to international litigation, jurisdiction, recognition and enforcement of foreign judgments and arbitration. Volume 2 deals with a number of specific areas of law. It addresses family law, property law, succession and trusts, corporations and insolvency and the law of obligations. A Companion Volume considers in greater detail the transitional issues arising from the United Kingdom’s withdrawal from the European Union and the relevant EU legislation in a number of key areas. The First Supplement to the 16th Edition brings the Main Work up-to-date. It deals with all developments since the publication of the Main Work. Important developments considered in the First Supplement to the 16th Edition include: Detailed commentary on the revisions to the grounds for service out of the jurisdiction applicable from October 1, 2022. All the many new High Court and appellate cases on jurisdiction and enforcement of foreign judgments. Authorities on the enforcement of arbitration agreements. Analysis of new authorities on foreign affairs and the conflict of laws. Important new decisions on aspects of cross-border family law. New decisions on the interpretation of the rules on choice of law for contractual and non-contractual obligations and property. Consideration of case law on transitional issues arising following the withdrawal by the United Kingdom from the European Union.