Opinion of Advocate General Kokott delivered on 25 September 2025.#HJ v Crédit agricole Corporate & Investment Bank.#Request for a preliminary ruling from the Cour de cassation.#Reference for a preliminary ruling – Article 50 TEU – Article 288 TFEU – Agreement on the withdrawal of the United Kingdom of Great Britain and Northern Ireland from the European Union and the European Atomic Energy Community – Court of a Member State seised before the end of the transition period provided for in that agreement – Application by the courts of the forum of the law of another State – United Kingdom legislation transposing a directive – Directive 2006/54/EC – Applicability of EU law – Principle of mutual trust – Principle that national law must be interpreted in conformity with EU law.#Case C-350/24.