Professor Craig addresses a potential categorisation of EU-derived legislation by reference to its origins within EU law, so there is pre-Lisbon treaty and post-Lisbon treaty analysis based on the articles of the pre-Lisbon provisions and of TFEU post Lisbon in 2009. I shall not elaborate on it at this stage as it does not arise in the context of this group. With respect to the noble Lord, I simply want to reassure him that we understand that there is a debate about how we should categorise EU-derived legislation.
The second point I shall mention at the outset is the reference to the principle of supremacy. That turns on Clause 5(2), which ensures that the principle of supremacy—it currently has effect through the ECA—will continue to apply but only for the purpose of resolving conflicts which arise between EU law which is converted by the Bill into domestic law and pre-exit domestic law.
Again, we have to be clear what the purpose of that is. I acknowledge in passing that the Constitution Committee proposed a different way of addressing Clause 5, which on one view might be considered neat, in so far as it involves applying the principle of supremacy without using the word “supremacy”. We will come on to debate that in due course, as the noble Lord, Lord Pannick, observed, and I will not take time up with that at this stage.
I turn to Amendment 15. Clause 2 has been drawn broadly deliberately. As has been noted, it will preserve any domestic regulations made under Section 2(2) of, or paragraph 1A of Schedule 2 to, the ECA 1972. But it also includes within its ambit any other domestic primary or secondary legislation which implements, or enables the implementation of, EU obligations and any related domestic legislation. In response to the inquiry from the noble Lord, Lord Pannick, I make the point that enactments often contain provisions derived from EU legislation—we have to remember that what we are referring to in Clause 2 is EU-derived domestic legislation. It is those parts of Acts such as the Equality Act or the Health and Safety at Work etc. Act that are EU derived which are to be brought within the ambit of retained EU law. It is necessary to read two elements: EU-derived domestic legislation—those parts of legislation that come from the EU—and retained EU law. They are linked.