"(a) In accordance with the provisions of Article 23, the Convention shall extend to the legal systems of the three parts of the United Kingdom, namely England and Wales, Scotland and Northern Ireland.
(b) In accordance with the provisions of Article 24, the United Kingdom reserves the right not to apply the Convention to a divorce or to a legal separation obtained before the date on which, in relation to the United Kingdom, the Convention comes into force. Nevertheless, the United Kingdom will in practice apply the provisions of the Convention to a divorce or legal separation obtained on or after the date on which the legislation implementing the provisions of the Convention came into force in the part of the United Kingdom in which recognition is sought.
The United Kingdom will also apply the provisions of the Convention to a divorce or legal separation obtained before that date, save that in such a case the application of those provisions will not affect any property rights to which any person became entitled before that date and those provisions will not apply where the question of the validity of the divorce or legal separation has been decided before that date by any competent court in the United Kingdom, the Bailiwick of Guernsey, the Bailiwick of Jersey or the Isle of Man. The legislation implementing the provisions of the Convention came into force in England and Wales and Scotland on the 1st of January 1972, and in Northern Ireland on the 1st of January 1974."