Because I don't regard the constitutional arrangements of Belgium has remotely comparable to the constitution of the United Kingdom. And the position that she's advocating is consistent with the question of independence, and that's where the question starts and ends, and she knows that these benches to not support that constitutional objective.

I will just point out to her that the example that is most often held up as an exemplar of the involvement of, as they are often described, sub-state Governments in the negotiation of arrangements with the European Union, is the Canadian example, where some of the provinces of Canada were effectively directly involved in those negotiations. Canada's constitution, as I understand it, does not reflect the principles that she is advocating, and Plaid Cymru are advocating in their motion today, and yet, the provinces in that example were involved in those discussions. And those are the sorts of arrangements that we think are substantively effective, and that is what we should focus on. We have repeatedly called on the UK Government to put in place a pragmatic and sensible set of arrangements that would allow us significant involvement in agreeing the mandate. 

And I will also say that, from the point of view of our European Union partners, they recognise very well that there are implications as to how the contents of relationships in the future are implemented and given reality within the devolved constitution of the United Kingdom. So, our argument is, it's in the interest of the UK Government, and its credibility in those discussions, for our Government to have a voice in settling those mandates and negotiations.