Newspaper headlines: Cabinet turmoil and more on the PM's birthday bash

The travails of the prime minister, once more, feature heavily in Saturday's papers.

The Daily Express does its best to make it sound like things aren't too bad for Boris Johnson. While describing him as being "on the ropes", it suggests the letter he sent to Tory MPs yesterday, vowing to build new relationships with them, was a "dramatic fightback."

Elsewhere, though, there is evidence that fightback might be shortlived. In the Daily Telegraph, the former minister, Nick Gibb, sets out in detail why he has become the latest Tory MP to seek a new prime minister. "Some argue that eating a few canapes with a glass of prosecco is hardly a reason to resign", he writes, before adding: "But telling the truth matters, and nowhere more so than in the House of Commons."

The Daily Mirror, meanwhile, leads on a claim that Boris Johnson was photographed at the birthday celebration he had in Downing Street holding a can of beer - describing it as "a new low to the Partygate row". The paper says the "bombshell photo" - thought to have been taken by the prime minister's official photographer - has been passed to police investigating lockdown social gatherings by government staff.

The Times reports "civil war" has broken out in the cabinet, after the Chancellor Rishi Sunak, and Health Secretary, Sajid Javid, distanced themselves from the prime minister's attack on Sir Keir Starmer over Jimmy Savile. "Sunak has to go", it quotes an unnamed cabinet minister as saying. Another is dismissive of the chancellor, telling the paper: "He's not wielding a knife, it's a penknife." A cabinet source is quoted as saying of Mr Javid's intervention that it was "plain stupid".

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The Daily Mail's lead story is the suggestion that officials in the Department of Health are being told they need to be in the office just once a week. The paper says that's in spite of No 10 "trumpeting a back to work drive." A Whitehall spokesman approached by the paper declined to comment.

The Financial Times says plans are being drawn up for a £1bn renovation of the British Museum, in London. Some of the money would be earmarked for refurbishing public galleries. But much of the funds would be used for more prosaic improvements, as a person involved tells the paper: "The roof is falling apart, the mechanical system is falling apart and the galleries are not properly heated."

Finally, it's safe to say the Daily Star does not approve of the Governor of the Bank of England, Andrew Bailey, urging people not to demand overly large wage increases - despite the huge increase in the cost of living - in order to restrain inflation. "The Plank of England" is its headline. "There's absolutely nothing better than being lectured about fiscal prudence by a prat with a £575,000 a year job, is there?", its front page says.