Britain regards its close ties with the United States, which it calls the special relationship, as a pillar of its foreign policy and Prime Minister Theresa May has courted Trump ahead of the country's departure from the European Union.
Mr Trump told reporters: "He's been very nice to me". He criticized United Kingdom leadership in the Sun interview, which happened to go to print while Prime Minister Theresa May was hosting the first couple at a gala Thursday evening.
"Is that really the behavior of a friend and, prime minister, isn't the problem for you that some of the things Mr. Trump has said about your Brexit plan, are right", she continued, directing her comments towards Prime Minister May.
In his interview, he also renewed his criticism of London Mayor Sadiq Khan over last year's terror attacks in London, saying he had done "a awful job".
Yesterday, a 20-foot-tall "Trump Baby" blimp was flown above Parliament Square with Trump responding to the inflatable and saying it made him feel "unwelcome" in London.
Trump, who arrived on Thursday, said he would avoid London as much as possible to avoid the protests. I did give Theresa, who I like-I did give her my views on what she should do and how she should negotiate. "My wife is a tremendous fan of hers", Trump said. If we don't want to do that, clearly we have got more scope to do trade deals internationally.
"I said very good things about her". May in the garden of her official country residence Chequers.
After being warned by diplomats that his intervention threatened the future of Mrs May's government the President tried to row back on an interview in which he had described a trade deal as impossible unless Mrs May radically altered her Brexit plans.
"What will happen now is that we will all study the white paper at the weekend and the EU27 prime ministers and Barnier task force will discuss it over the course of next week and issue a response to it".
"I used to love London as a city", Trump said.
"I think they like me a lot in the UK", Mr Trump had said in Brussels. "I am assuming that his mum told him that when you go to someone's house you do not insult the host". "I haven't been there in a long time".