Well, our position, as a Government, is not that we should have a veto in relation to these matters, but that where the UK Government is formulating a negotiating position for international negotiations of whatever type, they should not normally proceed with that negotiating mandate unless they have secured the agreement of devolved administrations, where devolved competencies are directly affected, or, where they can be indirectly affected, we should also be involved in those discussions. That seems to us to be a fundamentally reasonable request, and an appropriate role for the Welsh Government in those negotiations. We cannot be expected, nor can any devolved administration be expected, to co-operate in how those international obligations are implemented if we haven't been given a voice in formulating those positions at the start.

I would say that this is an important devolution principle, but it’s also an important principle from the point of view of the credibility of the UK Government. The European Union, and our partners in the European Union, know very well what is devolved to different nations within the United Kingdom, and they will know very well that the implementation of those obligations will rest on the shoulders of devolved administrations and legislatures. And, therefore, to proceed in the teeth of opposition to implementation of some of those obligations would be very naïve and would fundamentally affect the credibility of the UK Government in those negotiations.

I made that point very directly at the last JMC(EN) to David Lidington, when I pointed out what had been said in this Chamber and elsewhere, that if a future UK Government were to seek to proceed with the kind of trade deal that Donald Trump was championing in the press conference with Theresa May a few weeks ago, the Welsh Government would refuse to implement the privatisation of the NHS in Wales. We have been absolutely clear about that. That has been our position; it remains our position and it will be our position.