The U.K.’s top scientists said the government made a string of failures in its handling of the coronavirus crisis, putting Boris Johnson under pressure on live television.

Standing next to the prime minister, the country’s Chief Medical Officer Chris Whitty appeared to call him out on a "long list” of potentially flawed decisions that will need to be reviewed. At the much-watched daily news conference on Wednesday, the epidemiologist admitted that his greatest regret was the U.K.’s slow response.

His comments came on the same day of another damning critique from a highly-respected medical expert. Neil Ferguson, a specialist who worked on modeling the outbreak in its earlier stages, said that had the U.K. acted sooner the death toll could have at least been halved.