Reports emerged on Monday that the value of X had fallen to $19bn (£15.6bn) according to the company’s internal documents. Musk bought the site – then called Twitter – for $44bn (£36.2bn) last year.
US vice president Kamala Harris will also attend the summit.
While in the UK, she will discuss the Israel-Hamas conflict with Rishi Sunak during a whirlwind visit.
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The pair will also “consult on next steps in our support for Ukraine,” according to a White House official.
Downing Street has denied Mr Sunak is feeling snubbed by international counterparts, with Canadian Prime Minister Justin Trudeau, French President Emmanuel Macron and German Chancellor Olaf Scholz all believed to be unlikely to show.
An updated guest list could not be provided by the UK government on Monday, although a spokesperson claimed they “remain confident that we have brought together the right group of world experts in the AI space, leading businesses, and indeed world leaders and representatives who will be able to take on this vital issue”.
This came amid reports the invite to China has been upgraded to include asking President Xi Jinping to attend.
Downing Street insist it is a “significant achievement” to host the first AI safety summit of its kind.
After arriving in the UK on Tuesday, Ms Harris and her husband will travel to Winfield House in London.
She will give a “major policy speech” on the US’s vision for AI on Wednesday at the US embassy, before heading to Downing Street to meet with Mr Sunak.
Ms Harris will travel to Milton Keynes on Thursday to attend the AI summit, which will take place at Bletchley Park – where British codebreakers worked in secret, using early computer technology, during the Second World War.
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The vice president will then leave the UK later that day to return to the US.
Mr Biden signed an executive order earlier today aiming to guide the development of AI, requiring firms working on potentially dangerous models to share safety data with the government before their release, among other measures.
It is “shameful” that black boys growing up in London are “far more likely” to die than white boys, Metropolitan Police chief Sir Mark Rowley has told Sky News.
Sir Mark, who came out of retirement to become head of the UK’s largest police force in 2022, said: “We can’t pretend otherwise that we’ve got a history between policing and black communities where policing has got a lot wrong.
“And we get a lot more right today, but we do still make mistakes. That’s not in doubt. I’m being as relentless in that as it can be.”
He said the “vast majority” of the force are “good people”.
However, he added: “But that legacy, combined with the tragedy that some of this crime falls most heavily in black communities, that creates a real problem because the legacy creates concern.”
Sir Mark, who also leads the UK’s counter-terrorism policing, said it is “not right” that black boys growing up in London “are far more likely to be dead by the time they’re 18” than white boys.
“That’s, I think, shameful for the city,” he admitted.
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Police chase suspected phone thief
Baroness Casey was commissioned in 2021 to look into the Met Police after serving police officer Wayne Couzens abducted, raped and murdered Sarah Everard.
She pinned the primary blame for the Met’s culture on its past leadership and found that stop and search and the use of force against black people was excessive.
At the time, Sir Mark, who had been commissioner for six months when the report was published, said he would not use the labels of institutionally racist, institutionally misogynistic and institutionally homophobic, which Casey insisted the Met deserved.
However, London Mayor Sadiq Khan, who helped hire Sir Mark – and could fire him – made it clear the commissioner agreed with Baroness Casey’s verdict.
After the report was released, Sir Mark said “institutional” was political language so he was not going to use it, but he accepted “we have racists, misogynists…systematic failings, management failings, cultural failings”.
A few months after the report, Sir Mark launched a two-year £366m plan to overhaul the Met, including increased emphasis on neighbourhood policing to rebuild public trust and plans to recruit 500 more community support officers and an extra 565 people to work with teams investigating domestic violence, sexual offences and child sexual abuse and exploitation.
Watch the full interview on Sunday Morning with Trevor Phillips from 8.30am on Sunday.
Labour’s largest union donor, Unite, has voted to suspend Deputy Prime Minister Angela Rayner over her role in the Birmingham bin strike row.
Members of the trade union, one of the UK’s largest, also “overwhelmingly” voted to “re-examine its relationship” with Labour over the issue.
They said Ms Rayner, who is also housing, communities and local government secretary, Birmingham Council’s leader, John Cotton, and other Labour councillors had been suspended for “bringing the union into disrepute”.
There was confusion over Ms Rayner’s membership of Unite, with her office having said she was no longer a member and resigned months ago and therefore could not be suspended.
But Unite said she was registered as a member. Parliament’s latest register of interests had her down as a member in May.
The union said an emergency motion was put to members at its policy conference in Brighton on Friday.
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Unite is one of the Labour Party’s largest union donors, donating £414,610 in the first quarter of 2025 – the highest amount in that period by a union, company or individual.
The union condemned Birmingham’s Labour council and the government for “attacking the bin workers”.
Mountains of rubbish have been piling up in the city since January after workers first went on strike over changes to their pay, with all-out strike action starting in March. An agreement has still not been made.
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Rat catcher tackling Birmingham’s bins problem
Ms Rayner and the councillors had their membership suspended for “effectively firing and rehiring the workers, who are striking over pay cuts of up to £8,000”, the union added.
‘Missing in action’
General secretary Sharon Graham told Sky News on Saturday morning: “Angela Rayner, who has the power to solve this dispute, has been missing in action, has not been involved, is refusing to come to the table.”
She had earlier said: “Unite is crystal clear, it will call out bad employers regardless of the colour of their rosette.
“Angela Rayner has had every opportunity to intervene and resolve this dispute but has instead backed a rogue council that has peddled lies and smeared its workers fighting huge pay cuts.
“The disgraceful actions of the government and a so-called Labour council, is essentially fire and rehire and makes a joke of the Employment Relations Act promises.
“People up and down the country are asking whose side is the Labour government on and coming up with the answer not workers.”
Image: Piles of rubbish built up around Birmingham because of the strike over pay
Sir Keir Starmer’s spokesman said the government’s “priority is and always has been the residents of Birmingham”.
He said the decision by Unite workers to go on strike had “caused disruption” to the city.
“We’ve worked to clean up streets and remain in close contact with the council […] as we support its recovery,” he added.
A total of 800 Unite delegates voted on the motion.
Binance co-founder CZ has dismissed a Bloomberg report linking him to the Trump-backed USD1 stablecoin, threatening legal action over alleged defamation.