In this post we argue that as a matter of domestic constitutional law, the Prime Minister is unable to issue a declaration under Article 50 of the Lisbon Treaty – triggering our withdrawal from the European Union – without having been first authorised to do so by an Act of the United Kingdom Parliament.  Were … Continue reading Nick Barber, Tom Hickman and Jeff King: Pulling the Article 50 ‘Trigger’: Parliament’s Indispensable Role