Case C-621/18: Judgment of the Court (Full Chamber) of 10 December 2018 (request for a preliminary ruling from the Court of Session (Scotland), Edinburgh — United Kingdom) — Andy Wightman and Others v Secretary of State for Exiting the European Union (Reference for a preliminary ruling — Article 50 TEU — Notification by a Member State of its intention to withdraw from the European Union — Consequences of the notification — Right of unilateral revocation of the notification — Conditions)