Here is the second part of what seem to this writer crucial exchanges during the Brexit High Court case R (Miller and Santos) v Secretary of State for those not wishing to read the 580-odd pages of the transcript. It mainly contains Eadie’s second day arguments on behalf of the Government. They look mostly at questions put by the judges in the case and the answers. The links to the transcripts appear at the bottom along with quoted cases and comment. The digested version of the first day is here. And the third day is here. A report/analysis of the Supreme Court case is here: What if Eadie was right?
The second day of the case (Oct 17)
Ms MOUNTFIELD: Since the passage of the European Communities Act, no EU treaty has ever been ratified without prior Parliamentary authority, and I submit that that is necessary because of the two otherwise inconsistent constitutional principles. The Crown can make treaties, but not if, or to the extent, that they confer rights or impose liabilities in domestic law, or withdraw rights and liabilities in domestic law. I say that the consequence of that is that while the European Communities Act is in force, the prerogative power, either to make further treaties or to amend treaties, or to withdraw from treaties is impliedly abrogated, because otherwise it would be the Crown and not Parliament which would be conferring or withdrawing rights.If there is any doubt about that, section 2 of the European Union Act expressly provides that the Crown may not ratify a treaty which amends or replaces the existing treaties without Parliamentary authority, through various procedures.
I submit that since the purpose of that provision is to prevent the Crown from altering the foundations of EU law as it applies within the UK without Parliamentarysanction, and we have quoted William Hague introducing the 2011 Act saying that, by necessary implication, that restriction extends to any act of the Crown which would withdraw from or revoke those treaties without Parliamentary sanction, and thereby remove directly enforceable rights.