Sir Keir Starmer will explain to the US President that the BBC must "get its house in order" after Donald Trump declared he would carry on with a multi-billion pound lawsuit against the broadcaster.
The Prime Minister is due to use a call with Mr Trump to say he thinks the BBC must uphold the highest possible standards - that also includes rectifying mistakes quickly.
The US President said on Friday that he was still preparing to sue the BBC, despite an apology by the broadcaster for doctoring one of his speeches.
Mr Trump exclusively told GB News that he had an "obligation" to sue the broadcaster, warning: "This is beyond fake. This is corrupt".
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He told The Telegraph on board Air Force One that he would formally request damages between "£1billion and £5billion" against the BBC as early as next week.
Mr Trump added that Sir Keir was "very embarrassed" by the incident and had already tried to "put a call in to me".
It is understood the Prime Minister will use the call with the US President to tell him the BBC is a strong British institution and that the broadcaster has a crucial role in the age of disinformation.
According to The Telegraph, Mr Trump will use the call to check what the BBC is doing to reform its actions as his legal team works on its next step.
Sir Keir Starmer is expected to speak with Donald Trump over a call
| REUTERSA senior White House official said the phone call between the two leaders would be friendly.
"It's always going to be friendly," the official added.
"That's just how the two of them are."
The BBC came under fire after it had doctored a speech by Mr Trump, making it seem he was inciting rioting at the Capitol on January 6, 2021.
Donald Trump during his interview with GB News' Bev Turner
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The BBC's Director-General Tim Davie along with the BBC's Chief Executive Deborah Turness resigned last week after the backlash.
An apology was made on Thursday by the broadcaster to the US President, however, it rejected Mr Trump's claim of defamation.
Despite the apology, Mr Trump vowed to bring legal action against the corporation.
"I'm not looking to get into lawsuits, but I think I have an obligation to do it," Mr Trump said to GB News.
"This was so egregious.
"If you don't do it, you don't stop it from happening again with other people. I'd like to find out why they did it."
Mr Trump said the BBC "took my words - my mouth - and they had different words coming out to make it sound bad".
"I made a beautiful statement and (the BBC) made it into a not beautiful statement," the US President added.
"This is corrupt what they did."
The doctored speech by Mr Trump was aired on BBC Panorama last year, just days before the US Presidential election, as well as on BBC Newsnight in 2022.
The revelations, which came to light in a leaked BBC memo published by the Daily Telegraph, led to the resignation of the corporation's director-general, Tim Davie, as well as head of news, Deborah Turness.
News headlines in Britain have been dominated by the scandal ever since the revelations came to light nearly 10 days ago.
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