I have a lot of sympathy with that view. If we look back over the last few months, whenever we have reduced restrictions, that has worked—it can work—but the problem we have is that, combined with the euphoria over the vaccine, we have the situation where people are not just going to mix with three other households, but may also bend the rules a bit around that, so we will end up right at the limit. R is just below 1: there is no headroom left. I appreciate what the hon. Gentleman is saying and I understand it, but my fear is that it is just not going to work that way.