LONDON — Britain bungled its response to the coronavirus the first time around. Now many scientists fear it’s about to do it again. The virus is on the rise once more in the U.K., which has recorded almost 42,000 COVID-19 deaths, with confirmed daily infections hitting a record-high 6,634 on Thursday, though deaths remain far below their April peak. The surge has brought new restrictions on daily life, the prospect of a grim winter of mounting deaths — and a feeling of deja vu. “We didn’t react quick enough in March,” epidemiologist John Edmunds, a member of the government’s scientific advisory committee, told the BBC. “I think we haven’t learnt from our mistake back then and we’re, unfortunately, about to repeat it.” The U.K. is not alone in seeing a second wave of COVID-19. European countries including France, Spain and the Netherlands are struggling to suppress rising outbreaks while limiting the economic damage . But Britain’s pandemic response has revealed a rost...