As I said, I am not going to demur from the principles I already outlined. My hon. Friend is right. The UK single market is several times bigger for Wales, Scotland and Northern Ireland than the EU single market. The only difference in the case of Northern Ireland is that there £1 billion a week of trade between it and Ireland. We will see a significant increase in the amount of powers given to the devolved institutions, but we will have to protect matters such as the single market in the UK, security, environmental agreements and so on.