If we were part of the European Economic Area, I assume that we would not need to do that. However, as we are not going to be part of the European Economic Area, it may perhaps be necessary. I hope that the noble Lord will listen to my next point.
In the light of our successful phase 1 agreement, we are increasingly confident that we will secure a deal with the EU and that the prospect of leaving negotiations with no deal has reduced significantly. It is in both the UK’s and the EU’s interests to secure a good deal for both sides. However, as a responsible Government, we have a duty to plan for the unlikely scenario in which no mutually satisfactory agreement can be reached. I hope noble Lords agree that that is common sense. If we do not have this power, and in exiting the EU we are unable to correct a breach of the MFN principle, another WTO member could bring a dispute against the UK in the WTO. That is a situation that we want to avoid, and which could result in a loss of trade for UK business through retaliatory measures by other WTO members or claims for compensation against the UK.