In that interview, Trump said that May's new, softer approach to Brexit-which would leave Britain sticking to a "common rulebook" with Brussels on goods-would kill off the chances of a highly sought USA -U.K. trade deal.
He said he had told May how to do a Brexit deal, but: "She didn't agree, she didn't listen to me..."
-British trade deal after she failed to take his advice on how to negotiate.
The American firebrand's remarks were revealed while the President dined with Mrs May at a lavish black-tie dinner at Blenheim Palace, during which she has made a case for a new trade deal with the US.
"No, no, no, no".
That's what it takes to get an apology from Trump, apparently.
And she is left with the worry that the very man whose help she needs to deliver a dividend from Brexit may be actively conniving with those seeking to unseat her. The Washington Post is totally fake.
Brexit hardliners such as Johnson and the former Brexit minister David Davis, who resigned just before Johnson did, see May's plan as a betrayal-they don't want to be aligned with European Union rules at all.
Demolition of twin towers at Cape Canaveral's historic Launch Complex 17
For years the towers were known for their distinctive red colouring until anti-corrosive coatings were applied in the early 90s. It's considered to be twin landmarks with plenty of history.
The president told The Sun that while he is in the United Kingdom, he would like to see Johnson, who, "obviously likes me, and says very good things about me".
'I was very saddened to see he was leaving government and I hope he goes back in at some point.
"I would have done it much differently", Trump said.
Trump conflated immigration and terrorism in the interview, and he said that Khan, London's mayor, had done a "terrible job". London Mayor Sadiq Khan even granted permission to fly a giant, 20-foot balloon depicting Trump as an angry baby.
Trump also blasted Londoners in general, for protesting his arrival in England, and said that he "used to love London as a city", but added "when they make you feel unwelcome, why would I stay there?" "As he said in his interview with the Sun she "is a very good person" and he "never said anything bad about her", she said.
According to YouGov, 77% of Brits have an unfavorable view of Trump. Trump also said he was "cracking down" on the European Union as "they have not treated the United States fairly on trading".
"I would actually say she probably went the opposite way", Trump said.
On immigration, Trump said Europe was "changing culture" and "changing security" through its policies and "they'd better watch themselves". "If you really look, she probably went the opposite way".
Mr Trump is due to meet Vladimir Putin, who has rejected the nerve agent claims, at a summit when he finishes his four-day visit to Britain. Unfortunately, there was a story that was done, which was generally fine, but it didn't put in what I said about the prime minister, and I said tremendous things. She said the United States was "not just the closest of allies but the dearest of friends".