The president trashed Ms May’s Brexit plan, which he warned could “kill” any US-UK trade deal, in a humiliating interview in The Sun which has infuriated supporters of the prime minister.
Mr Trump insisted the pair had a ”very good relationship” as they met at Chequers for talks on trade and security.
The second day of the American leader’s visit to the UK was marked by mass protests across Britain, with a huge blimp depicting him as a baby wearing a nappy flown by demonstrators in London.
The six-metre inflatable caricature took to the skies in Westminster as tens of thousands of demonstrators prepare to march through London’s streets.
Protests were also planned to take place outside Chequers and in Scotland, where the president leader will arrive on Friday evening after having tea with the Queen at Windsor Castle.
Mr Trump was heavily critical of the proposed EU deal thrashed out by Ms May her cabinet, warning it would “probably kill” any future UK-US trade agreement.
The US leader said he would have done the negotiations “much differently” and claimed the prime minister had not listened to his advice.
Mr Trump’s comments were condemned by a number of MPs, including the universities minister Sam Gyimah, who tweeted: “Where are your manners, Mr President?”
Trump tells an anecdote about how he supposedly predicted the result of the Brexit referendum while opening his Turnberry hotel and golf club the day before the vote. This cannot be true, as he in fact opened Turnberry the day after the referendum.
May is asked whether she agrees with Trump’s statement that the Chequers Brexit proposal was not “what people voted for” and if she agrees that Boris Johnson would make a great prime minister.
May says her plan is what people people voted for because the UK is leaving the EU.
She says there will be an end to spending billions on the EU and the UK will regain control of its borders.
May does not answer the question about her former foreign secretary, as Trump interrupts to restate his opinion that Boris Johnson would “make a great prime minister”.
But he adds he also told The Sun that “this terrific woman” was doing a great job.
Theresa May is asked if she agrees with Donald Trump’s remarks, made in an interview with The Sun, that immigration has “change the fabric of Europe”.
May says the UK is proud of welcoming people who contribute to society, but that control of borders is important.
Trump, asked to expand on his comments, says immigration has been “very bad for Europe”.
He adds: “You are changing culture, you are changing security… It’s a very sad situation, it’s very unfortunate. I know it’s politically not necessarily correct to say that, but I’ll say it, and I’ll say it loud.”
Asked about his warning that Theresa May’s Brexit plan would “kill” a US-UK trade deal, Trump insists he did not criticise the prime minister.
He describes The Sun story in which his comments were made as “fake news” because they did not include his positive comments about the prime minister.
Ms May is doing a “great job”, he adds.
Trump says he and May discussed a range of issues including nuclear proliferation, North Korea, Iran, terrorism and border security.
He praises the UK military display at Sandhurst and says US-UK military co-operation is vital.
Addressing the issue of Brexit, he says: “I don’t know what they’re going to but whatever they do is OK with me.”
He adds he looks forward to reaching a trade agreement with the UK.
Theresa May is speaking first, and says the military display she watched with Trump this morning symbolised the US-UK partnership.
She welcomed US support against Russia following the Salisbury nerve agent attack.
The two leaders agreed to pursue an “ambitious” UK-US trade deal after Brexit, she adds.
Donald Trump and Theresa May have emerged for the press conference, holding hands as they walked down the steps to the podium.
The Independent‘s Maya Oppenheim has been speaking to protesters at the Women’s March.
Kirsty Bows, 29, told her: “I want to let Trump know he is not popular in Britain. The massive protests today are undeniable. He can’t dismiss them as fake news.”
“I decided to go to the women’s march because Trump is anti-choice in terms of abortion, he is anti-LGBT. There need to be more women in government, there need to be more women everywhere, and he is anti that. I’m a feminist and that is not going to fly with me.
“I am also here because I have 4 sisters and 4 nieces. I want to let my little nieces know they can be anything they want in spite of their gender.”
Amy Russell, 22, her colleague, added: “You are giving me goosebumps. I’m here because Trump is a horrible human being and I don’t like the way things are going under him”.
Thousands of protesters are filling the streets of central London for anti-Trump protests this afternoon. There are two major marches taking place – the Women’s March and the Stop Trump march.
The Women’s March set off from Portland Place, near to the US embassy, at 12.30pm and is progressing towards Parliament Square.
The Stop Trump march will also begin at Portland Place, at 2pm, and will culminate in a rally at Trafalgar Square at 5pm.
Donald Trump’s trip to the UK is not officially be a state visit, but it has many of the hallmarks of one.
A lavish banquet, military pomp and ceremony, tea with the Queen, and political meetings form part of the American leader’s busy two-day itinerary. All are familiar elements of a state visit.
The imposing grounds of Blenheim Palace, where Mr Trump and wife Melania were welcomed by Theresa May yesterday, are arguably a more dramatic setting than Whitehall’s Horse Guards Parade, where heads of state are normally officially greeted by the Queen.
The military display the US leader was treated went beyond the usual inspection of a guard of honour, with Mr Trump greeted with a specially composed fanfare performed by the State Trumpeters of the Household Cavalry Band.
But the main difference between the visit and a state visit is the Queen is not hosting the trip – neither accommodating Mr Trump and his wife at Buckingham Palace, nor staging a lunch for the couple or holding a state banquet in their honour.
No other members of the royal family will call in to Windsor Castle to meet the controversial billionaire-turned-statesman when he sits down to tea with the monarch.
Robert Shrimsley, political commentator at the Financial Times, suggests Donald Trump’s criticism of a soft Brexit reflect his desire to weaken the EU as a whole:
As Donald Trump and Theresa May endure a tense and awkward encounter at Chequers, their spouses appear to be having a rather nicer time back in London.
While the president and prime minister talk trade and security, Melania Trump and Philip May have been playing bowls together during a visit to the Royal Hospital Chelsea.
Accredited members of the press were advised to wear flat shoes to the event, but the first lady’s heels did not stop her from walking on to the bowling green and taking part in the game.
After rolling a ball down the green, she initiated a high five with a Chelsea pensioner who had given her effort a thumbs up.
Here’s some footage of Donald Trump and Theresa May addressing reporters before their talks at Chequers:
Donald Trump declined to answer a question from a US reporter about whether if he regretted remarks about Theresa May in his interview with The Sun. Footage of his response suggests he was less than pleased to be asked:
While Donald Trump has insisted her has a “very good” relationship with Theresa May, body language experts who these study pictures of them sitting down for talks at Chequers may have other ideas:
Theresa May has insisted the UK’s relationship with the US is “great”, as she sits down for talks with Donald Trump hours after humiliated her in an interview.
Speaking to reporters at Chequers, the prime minister said: “We have got a lot to discuss. We are going to be discussing the special relationship, which is great, between the UK and US.
“We are going to be discussing the real opportunities we have got to have this trade deal coming up when we leave the European Union.
“And of course we will discuss foreign policy and defence and security issues, where we work really closely together with the US.”
Ms May said Mr Trump had done “a very good job” at Nato in encouraging other member states to up their military spending.
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