Donald Trump has warned Theresa May her Brexit blueprint will “kill” hopes of any future trade deal with the US.

In an explosive intervention, the US president told The Sun: “If they do a deal like that, we would be dealing with the European Union instead of dealing with the UK, so it will probably kill the deal.”

The comments from Mr Trump will send shockwaves through Westminster – and emerged as the prime minister hosted him at a lavish banquet at Blenheim Palace, the birthplace of Sir Winston Churchill.

Mr Trump hit out at the PM’s handling of the Brexit negotiations, claiming he “would have done it much differently”.

“I told Theresa May how to do it but she didn’t agree, she didn’t listen to me… Deals that take too long are never good ones,” he said.

“If you look, she probably went the opposite way.”

Mr Trump said ahead of his visit that he could meet Boris Johnson, who resigned earlier this week over Mrs May’s Brexit plan.

And in comments that are unlikely to go down well in Downing Street, the president described the former foreign secretary as a “very talented guy” who he hoped would return to government one day.

Mr Trump said: “I think he is a great representative for your country.

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“I think he’s got what it takes and I think he has got the right attitude to be a great prime minister.”

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