A FORMER British Prime Minister took part in a threesome with sex trafficker Ghislaine Maxwell, a royal historian has sensationally claimed.
Author Andrew Lownie also said there was “lots more” to come out on Andrew Mountbatten-Windsor in the latest tranche of the Epstein files.
Lownie, author of Andrew’s unauthorised biography Entitled: The Rise and Fall of the House of York, made the claims on the Mail’s Deep Dive Podcast.
He had been discussing the latest batch of three million documents released by the US Department of Justice last week.
Yesterday, cops searched Lord Mandelson’s two homes as they probe intelligence leaks to his paedo pal Jeffrey Epstein.
But Mr Lownie has since incredibly claimed another political heavyweight is engulfed in the Epstein scandal.
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He alleged an ex-PM had been sexually involved with convicted sex trafficker Ghislaine Maxwell, the ex-partner of the disgraced financier.
The author said: “I have heard lots of talk about threesomes – including a threesome between Ghislaine and a British Prime Minister.”
When asked by host Sarah Vine if it was a recent PM, he responded: “A former Prime Minister, but it’s not Winston Churchill.”
Mr Lownie did not elaborate any further on the bombshell allegations.
Separately, in the latest dump of Epstein files, further details of Lord Mandelson’s relationship with the paedophile have come to light.
Documents appeared to show him passing confidential information to Epstein while he was Business Secretary.
Other files also include photos showing Mandelson in his underpants and a t-shirt while standing alongside a bathrobed female.
And last night, plain-clothed Met officers descended on the disgraced Labour peer’s properties in Camden, North London, and Wiltshire.
Cops arrived at his four-storey home near Regent’s Park at around 3.30pm yesterday, and a large box was later taken in.
His partner Reinaldo Avila da Silva could also be seen inside speaking to an officer.
Sir Keir Starmer is facing fresh calls to quit over his appointment of Mandelson as US ambassador.
In a grovelling apology this week, the Prime Minister promised he was not aware of the “depth and the darkness” of the pair’s relationship.
Speaking on the podcast, Mr Lownie also went on to suggest there was “much more” to come out about the disgraced former Duke of York.
Just this week, more files emerged with Andrew telling Jeffrey Epstein he wanted to be his “pet” in one creepy email.
Allegations also emerged that a stripper performed “various sex acts” on Andrew and paedo pal Epstein after they demanded a threesome.
The unnamed woman was “treated like a prostitute” after dancing for the pair at Epstein’s Palm Beach home in 2006, her lawyer claimed.
And cops confirmed they are assessing claims the disgraced financier trafficked a second woman to the UK.
It is alleged she had sex with Andrew in Royal Lodge before having a tour of Buckingham Palace.
Her bombshell claims mark the first time an Epstein accuser has alleged a sexual encounter at a royal property.
The Met said it was “aware of reports about a woman said to have been taken to an address in Windsor in 2010 for sexual purposes”.
We revealed how Andrew had been quietly booted out of Royal Lodge under the cover of darkness on Monday night.
He is staying temporarily at Sandringham’s Wood Farm cottage before moving next door to his permanent home Marsh Farm from April.
He is understood to have been kicked out earlier than planned after King Charles became increasingly concerned with the shocking revelations.
Andrew Mountbatten-Windsor has always vigorously denied any wrongdoing relating to his relationship with Epstein.
