It is always a pleasure to hear from my right hon. and learned Friend. In my statement, I drew a distinction between the base scenario, which involves those unarguable facts that we can all agree in this House will be the consequence of a no deal-exit, and a reasonable worst-case scenario. Operation Yellowhammer uses those base facts to draw up what a reasonable worst-case scenario might be. That is the distinction between them.
With respect to the Schengen information system, I would say, in fairness to my right hon. and learned Friend, that that is not the only law enforcement or national security tool that we will lose access to in a no-deal Brexit. There are others as well, but I have had an opportunity to talk to people who are involved in the provision of our national security, and I recognise that there are appropriate steps that we can take.