Art. 50 TFEU
1. Even if it has caused great displeasure to enthusiasts of the current mounting populism, it is now clear that the UK Parliament will play a crucial role in the so-called Brexit procedure. As it is already well known, the UK Supreme Court has confirmed that an act of British Parliament is required to authorise ministers to give notice of the decision of the country to withdraw from the European Union, pursuant to Article 50 (1) TEU (see, in this regard, UK Supreme Court, 24 January 2017, Judgment (on the application of Miller and another) (Respondents) v. Secretary of State for Exiting the European Union (Appellant)). At the time I write the bill to give such authorization has been passed in House of Commons and the final word of the House of Lords is expected at the beginning of March.
From the EU perspective, the recognition of the central role of the Parliament amounts to an increased possibility that, after giving notice of withdrawal, the UK may change its mind on Brexit. In the Miller case (quoted above) both the UK High Court in the first instance and the UK Supreme Court on appeal started from the premise – common to the applicant and the respondent – that the notification pursuant to paragraph 1 of Article 50 is irrevocable. However, on the one hand, the alleged irrevocability of the notification does not preclude any future “change of one’s mind” based on domestic law, and on the other, the only institution that may finally decide on this issue is the Court of Justice, and not national institutions. This is why I believe, following opinion already expressed (see, Miglio), that the Supreme Court should have referred the question of revocability of the notification to the Court of justice. Even if, as a matter of judicial policy and of political expediency, the reason why it did not is perfectly understandable.