Judgment of the Court (Grand Chamber) of 31 October 2019.#European Commission v United Kingdom of Great Britain and Northern Ireland.#Failure of a Member State to fulfil obligations — Own resources — Association of the Overseas Countries and Territories (OCT) with the European Union — Decision 91/482/EEC — Article 101(2) — Acceptance for import into the European Union free of customs duties of products not originating in the OCT but which are in free circulation in an OCT and are re-exported as such to the European Union — Export certificates EXP — Wrongful issue of certificates by the authorities of an OCT — Article 4(3) TEU — Principle of sincere cooperation — Liability of the Member State having special relations with the OCT concerned — Obligation to compensate for the loss of the European Union’s own resources caused by the wrongful issue of export certificates EXP — Imports of aluminium from Anguilla.#Case C-391/17.