Boris Johnson receives oxygen treatment in ICU amid questions about who’s running the UK

London (CNN) – British Prime Minister Boris Johnson has been receiving oxygen treatment for coronavirus in intensive care, a senior member of the Cabinet confirmed.

Cabinet Office minister Michael Gove said in an interview with the BBC that the Prime Minister was “not on a ventilator” but had “received oxygen support.

The Right Honourable Michael Gove

“He told BBC Radio 4’s Today program that Johnson was “receiving the very best care” at St. Thomas’ Hospital in London, after being taken into intensive care at 7 p.m. local time (2 p.m. ET) on Monday.

“And of course, one of the reasons for being in intensive care is to make sure that whatever support the medical team consider to be appropriate can be provided,” Gove said.

Gove later said he was self-isolating at home because a member of his family was showing coronavirus symptoms.

Gove said on Twitter that he was not displaying any symptoms and was continuing to work. He’s the latest in a long line of British government ministers and advisers to be forced into isolation.

Johnson’s hospitalization has highlighted the lack of a formal line of succession in the UK government. Johnson, 55, nominated the Foreign Secretary, Dominic Raab, who also holds the title of First Secretary of State, to deputize for him “where necessary.” But the is no official deputy recognized by UK law or the country’s largely unwritten constitution.

Few formal powers are invested specifically in the UK prime minister and key decisions are taken collectively by the Cabinet or its sub-committees. Many statutory powers are held by individual secretaries of state. But in recent decades, holders of the UK’s top political office have adopted a more presidential style, and the sweeping nature of the ruling Conservative Party’s most recent election victory was attributed to Johnson’s personal appeal with voters.

“The Prime Minister has a team around him who ensure the work of government goes on,” Gove told the BBC. He said Johnson had a “stripped-back diary” last week to make sure he could follow the medical advice of his doctors.

The Right Honourable Dominic Raab

Gove confirmed that Raab was now in charge of seeing through Johnson’s plan to tackle the novel coronavirus. “Dominic [Raab] takes on the responsibilities of chairing the various meetings the PM would’ve chaired but we’re all working together to implement the plan that the PM has set out,” he said.

But Gove sidestepped a question about who held the “nuclear codes,” saying he would not discuss national security issues.

Conservative MP Tobias Ellwood, who chairs the House of Commons defense select committee, tweeted good wishes to Johnson but added: “It is important to have 100% clarity as to where responsibility for UK national security decisions now lies. We must anticipate adversaries attempting to exploit any perceived weakness.

Boris Johnson learns no one is immune to Covid-19” Johnson was taken to hospital on Sunday evening. At the time, Downing Street said the decision was a precaution because he continued to suffer from a cough and a fever ten days after testing positive for the coronavirus. But his condition deteriorated on Monday, Downing Street said, and he was moved to the intensive care unit at St. Thomas’ Hospital.

Gove told Sky News on Tuesday morning that Cabinet ministers were not told about the Prime Minister’s deteriorating condition until nearly an hour after Johnson was taken into intensive care.

Asked whether the government had been up front with the public about Johnson’s condition, and whether the Cabinet had been taken by surprise, he replied: “Yes we were. The [daily coronavirus] briefing that was given at 5 o’clock was given at a time when we didn’t know about the deterioration in the Prime Minister’s condition.”

“We were informed subsequently. The Prime Minister was admitted to intensive care at 7 o’clock, and that information wasn’t given to us in government — to those in the cabinet — until just before 8 o’clock.

“The coronavirus has hit the top of the British government hard. The Health Secretary, Matt Hancock, said on March 27 that he had the virus, on the same day that chief medical officer, Chris Whitty, announced that he would begin self-isolation after displaying Covid-19 symptoms. Neil Ferguson, a top UK government adviser on the virus, said on March 18 he believed he had been infected. Various other senior government ministers and advisers have been forced to self-isolate.