1. Without prejudice to paragraph 4, the authorities of the United Kingdom shall be responsible for implementing and applying the provisions of Union law made applicable by this Protocol to and in the United Kingdom in respect of Northern Ireland.

2. Without prejudice to paragraph 4, Union representatives shall have the right to be present during and receive, upon request, all relevant information relating to any activities of the United Kingdom authorities related to the implementation and application of provisions of Union law made applicable by this Protocol. The United Kingdom shall facilitate that presence of Union representatives and provide them with the information requested. Where the Union representative requests the United Kingdom authorities to carry out control measures in individual cases for duly stated reasons, the United Kingdom authorities shall carry out those control measures.

3. The practical working arrangements related to the exercise of the rights of Union representatives referred to in paragraph 2 shall be determined by the Joint Committee, upon proposal from the Specialised Committee.

4. As regards Article 6(2), and Articles 8 to 12 of this Protocol, as well as Article 7(1) of Annex 4 to this Protocol in respect of measures of the Member States, the institutions, bodies, offices, and agencies of the Union shall in relation to the United Kingdom, and natural and legal persons residing or established in the territory of the United Kingdom, have the powers conferred upon them by Union law. In particular, the Court of Justice of the European Union shall have jurisdiction as provided for in the Treaties in this respect. The second and third subparagraphs of Article 267 TFEU shall apply to and in the United Kingdom in this respect.

5. Acts of the institutions, bodies, offices, and agencies adopted in accordance with paragraph 4 shall produce in respect of and in the United Kingdom the same legal effects as those which they produce within the Union and its Member States.

6. When representing or assisting a party in relation to administrative procedures arising from the exercise of the powers of the institutions, bodies, offices, and agencies of the Union referred to in paragraph 4, lawyers authorised to practise before the courts or tribunals of the United Kingdom shall in every respect be treated as lawyers authorised to practise before courts or tribunals of Member States who represent or assist a party in relation to such administrative procedures.

7. In cases brought before the Court of Justice of the European Union pursuant to paragraph 4:

(a) the United Kingdom may participate in the proceedings before the Court of Justice of the European Union in the same way as a Member State;

(b) lawyers authorised to practise before the courts or tribunals of the United Kingdom may represent or assist a party before the Court of Justice of the European Union in such proceedings and shall in every respect be treated as lawyers authorised to practise before courts or tribunals of Member States representing or assisting a party before the Court of Justice of the European Union.