On Thursday night, hundreds of demonstrators chanted outside the US ambassador's residence in London, where Trump was staying, providing a preview of the forceful protests expected Friday.
Protests are expected against Trump, whose policies - including a travel ban on a number of predominantly Muslim countries, detention of child migrants on the US-Mexico border and imposition of tariffs on European Union steel and aluminium exports - have all been criticised by the UK.
"Mr President, Sir Winston Churchill once said that, "To have the United States at our side was, to me, the greatest joy", Ms May told Mr Trump, according to a text of her speech provided by her office.
'Policies that are having very real impacts on real lives not just in the United States but all over the world'.
The British government on Thursday published its long-awaited Brexit blueprint aimed at restarting stalled talks with the European Union, only for it to be panned by eurosceptics, the City of London and the USA president.
Speaking shortly before arriving at London Stansted Airport on Thursday, the president said he was "fine" with people protesting against him but insisted that people across the United Kingdom, including in Scotland, "like me a lot".
Call To Ban President From Government-Owned Scottish Airport
They said that the performers will also be marching with a fetish group, as Fetish Week London is running from July 8 to 15. Mr Trump will spend the weekend in Scotland where he has two golf courses and plans to play at least once.
Trump personally criticized May's handling of Brexit, saying that her so-called soft-Brexit approach went "the opposite way" to what he had recommended and that it was "very unfortunate".
The demonstrations were in stark contrast to Trump's assertion to the press that the British "agree with me on immigration" and mirrored those in Brussels ahead of Trump's arrival there on Tuesday to meet with other North Atlantic Treaty Organisation leaders.
Trump claimed member nations had agreed to boost their defense budgets significantly and reaffirmed - after days of griping that the USA was being taken advantage of by its allies - that the U.S. remains faithful to the accord.
For supporters, Trump and Brexit offer the prospect of breaking free from what they see as obsolete institutions and rules. "How can we roll out the red carpet for someone who stands for everything we stand against?" said academic Emily Jones, 40, one of those protesting outside Blenheim Palace.
He added: "If they do that, then their trade deal with the USA will probably not be made".
"The people voted to break it up so I would imagine that's what they would do, but maybe they're taking a different route, I don't know if that is what they voted for".
England hailed as heroes after World Cup heartache
That team also exceeded expectations and won the adulation of fans at home with a beloved center forward who played for Tottenham. Mario Mandzukic scored in the 109th minute of the semi-final to secure a 2-1 win after extra-time in Moscow.
His comments came at the end of a tumultuous few days for May, during which two senior ministers resigned in protest at her plans for trade with the European Union after Britain leaves the bloc next March.
Public anger over Mr. Trump's visit has already had consequences.
"When we leave the European Union we will begin to chart a new course for Britain in the world and our global alliances will be stronger than ever", May said ahead of Trump's visit.
He is due to leave on Sunday for talks in Helsinki the following day with Russian President Vladimir Putin, whose government May has accused of unleashing a lethal nerve agent in the city of Salisbury.
Trump then heads to Windsor Castle later Friday for tea with Queen Elizabeth II.
The a 20-foot-tall angry "Trump Baby" blimp.
As US-China trade war escalates, S Korea warns on impact
ASIA'S DAY: The Shanghai Composite Index rose 2.2 percent to 2,837.66 and Tokyo's Nikkei 225 gained 1.2 percent to 22,187.96. The tariffs could take effect after public consultations end on August 30, according to a statement from the U.S.