My Lords, I was quite surprised to find the noble Lord, Lord Purvis of Tweed, concentrating on the costs involved in the border between the UK and the EU. When I put my name down to speak in this group, I thought it was about assessing the costs of our trade with other countries. Let me be clear: I am always in favour of ensuring that the Government identify the costs and burdens on business in all of their activities, so he will not find me opposing his amendment on that ground at all.
However, his amendment is very unclear, because it is not clear what the counterfactual is: costs compared with what? In the context of his subsection (1), which is about the rollover agreements, are the costs compared with the current status quo—that is, in the implementation period—or with trading on WTO terms after 1 January, or with something else? It is very unclear. In the case of subsection (2), presumably the cost will be compared with trading with those other third countries on WTO terms because that would be the counterfactual. It seems to be highly unlikely that we would enter into a free trade agreement with another party that involved costs additional to those trading on WTO terms, so the noble Lord’s amendment does not entirely make sense.