The noble Lord is entirely right to ask about the route out. That is exactly what we hope to be thinking about very soon. The criteria will include how much vaccination we have here in the UK and the efficacy of that vaccine against all the variants present in the world. They will also include the presence of variants in the other countries; there is a stepped process for analysing that. Lastly, they will include the infection rates in those countries. We hope to be able to take concrete steps on that shortly. The treaties necessary to have mutual vaccine recognition are being discussed at a high level as we speak.