It meant Britain would now have to navigate policy on the virus while being unsighted as to where it was spreading. ‘I was absolutely astonished,’ said Devi Sridhar, Professor of Global Health at Edinburgh University, when she heard that contact tracing had been stopped. ‘I didn’t fully understand the ramifications of what was being said. And then it hit me that, actually, they’re letting the virus go. And so at the time I just felt like we were sleepwalking into disaster.’