In a televised address to the nation the Prime Minister said he was 'deeply, spiritually reluctant' to make the changes he unveiled in Parliament today. But he said it was necessary to reintroduce working from home rules and a swathe of social impacts in order to avoid a dramatic surge in deaths and a second, economically devastating total lockdown. The beleaguered premier faced fire from all sides as he U-turned on his push to reopen workplaces after just a few weeks. He also faced barbs for introducing other swingeing new measures including a 10pm pub curfew and £200 fines for mask rule-breakers in England in the face of a surge of new coronavirus infections sweeping the country. But speaking from Downing Street tonight he warned that 'iron laws of geometrical progression are shouting at us from the graphs that we risk many more deaths, many more families losing loved ones before their time'. And he hit out at his critics - including Tory MPs and business leaders who warned of the economic impact of what he is doing, adding: 'To those who say we don't need this stuff, and we should leave people to take their own risks, I say these risks are not our own. The tragic reality of having Covid is that your mild cough can be someone else's death knell.'