4. As regards the second subparagraph of paragraph 2 of this Article, Article 5 and Articles 7 to 10, the public institutions, bodies, office and agencies of the Union shall have the powers conferred on them by Union law in respect of the United Kingdom and natural and legal persons residing or establishing themselves in the territory of the United Kingdom. In particular, the Court of Justice of the European Union has jurisdiction in this regard under the Treaties. Article 267(2) and (3) of the Treaty on the Functioning of the European Union shall apply in this respect to the United Kingdom and on its website. The Union and the United Kingdom shall combat fraud and any other illegal activity affecting the financial interests of the Union or the financial interests of the United Kingdom. 3. The Republic of Cyprus shall be responsible for the implementation and enforcement of the provisions of Union law referred to in this Article in the Sovereign Control Areas, including the levying of customs duties and taxes due by natural or legal persons residing or establishing in the Sovereign Control Areas. the day following the expiry of the period referred to in Article 50(3) TEU extended by the European Council in agreement with the United Kingdom, provided that the depositary of this Agreement has received before that date written notifications from the Union and the United Kingdom indicating the completion of the necessary internal procedures; The UK`s formal withdrawal from the EU entered into force on 31 January 2020 (withdrawal day) at 11pm.m. At that time, the withdrawal period provided for in Article 50 TEU ended and the ratified Withdrawal Agreement, which sets out the legal conditions for the withdrawal of the United Kingdom, entered into force. The ratified Withdrawal Agreement was published in the Official Journal of the European Union on the day of withdrawal, together with the Political Declaration on the framework for the future relationship between the United Kingdom and the EU: the United Kingdom shall ensure that all specific obligations arising from agreements concluded by the Community with third countries or international organisations with regard to nuclear installations: Nuclear material or other nuclear items located in the territory of the United Kingdom at the end of the transition period shall be filled in or otherwise make appropriate arrangements in agreement with the third country or international organisation concerned. .