Nigel Farage has offered to help Lord Mandelson win over Donald Trump and Elon Musk.
The Reform UK leader, who is friends with both men, said he would be “happy to act as a bridge”.
Lord Mandelson has been appointed by Sir Keir Starmer as the UK’s ambassador to the US as Mr Trump is set to return to the White House.
Mr Farage, the MP for Clacton, told the Telegraph: “Our relationship with the USA is by far our most important.
“If it helped the national interest I would be happy to act as a bridge.”
Mr Trump’s campaign chief Chris LaCivita has already branded the Labour grandee a “moron” after comments resurfaced where he had called the Republican a “white supremacist”.
Meanwhile, the Prime Minister has been embroiled in an ongoing war of words with tech billionaire Elon Musk.
Lord Mandelson last month suggested he would seek to work with Mr Farage when he was the favourite for the role.
Speaking on his Times podcast, the Labour grandee said: “If I were the Government here, I’d be asking the embassy in Washington DC to find out who his [Musk’s] other British friends are.
“Who are they all? They have got to be used as a bridge to Musk. And so that’s what I would do.
“Swallow your pride, find out who his friends are and try to get into those networks. You cannot just continue this feud indefinitely. You’ve got to get over it.”
He added: “I would include Nigel Farage. You can’t ignore him. He’s an elected MP.”
