‘The Supreme Court judgment in Gina Miller is not merely an affirmation of what the High Court said. The eight member majority confirmed the earlier decision, but also took the opportunity to restate a fundamental principle, which had been left implicit by the court below. The High Court said that the substantive rights arising out of EU law and the European Communities Act 1972, in employment, environment, consumer protection, competition or free movement, could not be abolished merely by the exercise of the royal prerogative. This was a standard interpretation of existing law, adapted for the context of Article 50. The Supreme Court accepted that this was correct, but added one additional reason.’
UK Constitutional Law Association, 30th January 2017
Source: www.ukconstitutionallaw.org
