European Union Act 2011

122. Paragraph 59 of the judgment in the ‘Metric Martyrs’ case illustrates this point. Lord Justice Laws stated:

“59

Whatever may be the position elsewhere, the law of England disallows any such assumption. Parliament cannot bind its successors by stipulating against repeal, wholly or partly, of the ECA. It cannot stipulate as to the manner and form of any subsequent legislation. It cannot stipulate against implied repeal any more than it can stipulate against express repeal. Thus there is nothing in the ECA which allows the Court of Justice, or any other institutions of the EU, to touch or qualify the conditions of Parliament’s legislative supremacy in the United Kingdom. Not because the legislature chose not to allow it; because by our law it could not allow it. That being so, the legislative and judicial institutions of the EU cannot intrude upon those conditions. The British Parliament has not the authority to authorise any such thing. Being sovereign, it cannot abandon its sovereignty. Accordingly there are no circumstances in which the jurisprudence of the Court of Justice can elevate Community law to a status within the corpus of English domestic law to which it could not aspire by any route of English law itself. This is, of course, the traditional doctrine of sovereignty. If it is to be modified, it certainly cannot be done by the incorporation of external texts. The conditions of Parliament’s legislative supremacy in the United Kingdom necessarily remain in the United Kingdom’s hands.  But the traditional doctrine has in my judgement been modified.  It has been done by the common law, wholly consistently with constitutional principle.”