My Lords, if I may address the point made by the noble Lord, Lord Purvis, if we leave with a deal there is an implementation period until the end of 2020. There is much greater confidence, as I believe this House would accept and appreciate, about getting all the arrangements fully continued and rolled over within that time period.
There are two issues here. The first is the notification by the EU that the UK is to be treated as part of the EU during the implementation period. The second is
what third countries need to do to enter into continuity agreements. The first is a matter of third countries accepting that they will treat us in that way; on the second, we are engaged in detailed discussions with individual third countries to try to help them ensure that they are in a position to enter into the agreements on time. I stress, as noble Lords have highlighted, the difficulty of the timing if there were no deal.