Organizers of anti-Trump rallies say they are not expecting any trouble at all - and that it would be very unlikely for any hostility to be directed at ordinary Americans.
Labour Party legislator Paul Flynn, who has criticized Mr. Trump in Parliament, says the US leader has outraged Britons - and people around the world - with his harsh treatment of immigrants. You see what's going on throughout the world with immigration.
"I think it's amusing". He added: "I think that's why Brexit happened".
The comments come after May suffered a series of resignations from her Cabinet after she signalled that Britain was heading for a softer form of Brexit with closer ties to the European Union than previously expected.
Ambassador Johnson sought to play down Trump's comments.
Winfield House is the only place where Trump will spend time in central London, where demonstrators are expected to gather in their tens of thousands for a march on Friday afternoon, hours after a giant "Trump baby" balloon is flown near the UK Parliament in an eye-catching stunt. However, he is still being accorded the honor of a Thursday night dinner with May at Blenheim Palace, the birthplace of celebrated United Kingdom wartime leader Winston Churchill.
The group, which will be wearing punk-inspired outfits, also includes drag artists Donna Trump, Jonny Banks, Anna Phylactic, Liquorice Black, and Violet Blonde.
Despite not being an official state visit, the Government is desperate to ensure the USA leader feels he is being treated with the appropriate level of pomp and ceremony.
Russia, Brexit and the Middle East are set to top the agenda.
George Clooney has been injured in a motorcycle accident in Sardinia
Clooney allegedly said that he was "fine" and that he would continue filming his Catch-22 mini-series in a few days. Clooney, 57, is serving as director and executive producer on the project, and also plays the role of Scheisskopf.
Donald Trump's July visit to the UK will be his first as president of the United States.
Police estimated there were about 1,000 people demonstrating near the palace, the birthplace of wartime Prime Minister Winston Churchill.
He has also said he might speak to Boris Johnson, who quit as foreign secretary over May's plans.
Only one person, the digital entrepreneur and philanthropist Baroness Martha Lane-Fox, has publicly refused the invitation.
In the busy south London neighborhood of Brixton, Victor Greetham, who runs a jazz bar, said he hasn't been to a demonstration since he protested against the Iraq War in 2003, but he planned to attend one of the protests against Trump's visit.
The president wore a black tuxedo for the occasion as he escorted his wife from the USA ambassador's London residence in Regent's Park to the awaiting helicopter Marine One.
On Friday, Trump will meet with May at Chequers and another meeting with the Queen Elizabeth II at Windsor Palace. This part of the visit is being considered private.
It has also complained that 300 officers working during the visit will have to sleep on camp beds in a gymnasium that has no hot water and restricted access to hot food.
Anti-Trump demonstrations were expected to take place in Bristol, Newcastle, Leeds, Cambridge and Cardiff.
One such protest will entail a 19-foot-high orange balloon shaped like Trump as a baby, which London Mayor Sadiq Khan - who's feuded with the president - approved under "the right to peaceful protest".