We are after the fact now on that, but I think we have to protect the principle that we do not expect people to wear masks if doing so is detrimental to their health. That is the right level of proportionality, but we are reliant on good faith and people not abusing that, and I would be disappointed to hear of cases such as those my hon. Friend raised.
I particularly want to raise with Ministers a point about shop workers. Our hard-working shop workers have given us so much during the last 20 months. They have kept open the vital community assets that mean we were all able to be fed and watered. In return they have faced increasing violence and abuse. It should be made very clear that they are not being asked to police this; I hope the Minister will do that and also give more detail, as colleagues clearly wish to hear it, about how enforcement will work in practice.
The largest number of infections is now in those aged under 20, with the peak at approximately 10. This is a big part of continuing transmission, yet the changing and drifting policies on masks have created confusion across schools, colleges and universities. Can the Minister confirm what the new requirements are across all settings?