England is about to do what no country has done before during the coronavirus pandemic - open up in the face of rapidly rising infections, driven by the more transmissible Delta variant. Nearly all remaining Covid restrictions will end on 19 July. It will mean an end to legal requirements on social distancing, no limits on how many people can meet and face coverings will no longer be required by law. England has high levels of immunity with significant numbers of the population vaccinated. The government’s plan is that this new so-called ‘natural’ wave of infections will be allowed to play itself out without lockdown restrictions. But many experts are warning that it is a gamble