In an extraordinary day of testimony, Dominic Cummings set out in excruciating detail what he sees as the government’s failures on a systemic and personal level that led to “tens of thousands” of unnecessary Covid deaths.

In a gruelling seven-hour session, the PM’s former chief adviser turned nemesis delivered an excoriating verdict on the lack of preparedness for a pandemic and let rip at senior figures.

Boris Johnson, he said, was unfit to be prime minister. Cummings said: “There’s a very profound question about the nature of our political system that means we got at the last election a choice between Jeremy Corbyn and Boris Johnson,” forgetting perhaps that he had campaigned to put Johnson in Downing Street.