The scenario has raised additional questions concerning the authorities’s plan to elevate restrictions on Monday, at the same time as instances have surged to more than 50,000 a day, largely due to the extremely transmissible Delta variant. British information media have referred to as July 19 “Freedom Day,” however for 1000’s of people who find themselves both contaminated or have been in touch with an contaminated individual, that phrase will ring hole.

Underneath the well being service’s pilot program, Mr. Johnson and Mr. Sunak would have continued to work at Downing Road, which has been outfitted with amenities to conduct day by day exams. They’d additionally nonetheless have been required to self-isolate when not at work. Mr. Johnson and his wife, Carrie, stay in an residence on the higher flooring of 11 Downing Road, adjoining to his workplace. That constructing additionally homes Mr. Sunak’s workplace.

The information of the testing association introduced instant criticism, with some declaring that it was solely the most recent instance of senior officers enjoying by completely different guidelines. By 11 a.m. in London, three hours after the unique assertion, each males backed off.

The prime minister was at his nation residence, Chequers, when he was notified by the N.H.S. and can now keep there to isolate. “He won’t be collaborating within the pilot program,” a spokesman mentioned in a press release.

Mr. Sunak said on Twitter that “while the take a look at and hint pilot is pretty restrictive, permitting solely important authorities enterprise, I recognise that even the sense that the principles aren’t the identical for everybody is fallacious.”

“To that finish,” he wrote, “I’ll be self isolating as regular and never collaborating within the pilot.”

Mr. Johnson survived a critical bout of Covid in April 2020, when the virus first swept by means of Downing Road. At the moment, he was admitted to an intensive care unit, leaving the federal government beneath the non permanent course of the international secretary, Dominic Raab. Mr. Sunak shouldn’t be recognized to have ever contracted the coronavirus.

Mr. Johnson was pressured to isolate once more in November after being uncovered to a Conservative lawmaker, Lee Anderson, who had developed Covid signs.