Trump said the interview published by the Sun omitted his praise of May, and that his staff had taped the interview: "It's called fake news and we solve a lot of problems with the good old recording instrument".
He said he had gotten to know her a lot better in the last few days and reckoned she was a "tough negotiator and a very smart and determined person" who would do very well.
President Trump doubled down on his comments Friday afternoon in comments delivered to journalists at the Prime Minister's country retreat, Chequers.
It was posted as Trump arrived in the United Kingdom this week, meeting with Prime Minister Theresa May.
But the President was also clear to express that his favourable impression of Johnson did not mean the time for the end of May's leadership had come.
"I think he thinks I'm doing a great job". Trump said that May's "soft" blueprint for the UK's future dealings with the European Union would probably "kill" any future trade deals with the US.
"I am not pitting one against the other", Trump said.
This Is the Most Tender Photo of the World Cup So Far
Gareth Southgate's side face Croatia in the semi-finals on Wednesday at the Luzhniki Stadium in Moscow. England fans were left devastated tonight after being beaten by Croatia.
"Whatever you do is OK with us, just make sure we can trade together, that's all that matters".
London Mayor Sadiq Khan said the demonstrations are not anti-American but rather reflect opposition to "the politics of fear and despair".
"I was cutting a ribbon for the opening of Turnberry [his Scottish golf resort] - you know they totally did a whole renovation, it is attractive - the day before the Brexit vote". (Picture: AP) Donald Trump and wife Melania have been pictured dressed up to the nines at a lavish dinner at Blenheim Palace, hosted by Theresa May. "I guess when they put out blimps to make me feel unwelcome, no reason for me to go to London".
In an interview with the Rupert Murdoch-owned Sun newspaper published just hours before he was due to have lunch with May and tea with Queen Elizabeth, Trump chided the "very unfortunate" results of May's Brexit negotiation. "Look around. You go through certain areas that didn't exist ten or 15 years ago".
There are street protests of Trump's first visit to Britain since taking office almost 18 months ago.
May's office said it would not comment on The Sun article during a greeting when Trump met May at the Royal Military Academy Sandhurst to review a military exercise.
"Take a look at the terrorism that is taking place", Trump said. He added: "I think she maybe found it too brutal".
The president also returned to his feud with the London mayor Sadiq Khan, who he previously sparred with via Twitter in the aftermath of the terrorist attacks on London in 2017.
Emily Thornberry had strong words for Donald Trump.