After spending the night at the USA ambassador's official residence in Regent's Park, London, Mr Trump will join the PM at a military base on Friday to observe a joint counter-terrorism exercise involving United Kingdom and U.S. special forces.
Hundreds of thousands of Britons are expected to take to the streets nationwideon Friday in opposition to Trump, who is scheduled to arrive in the U.K. Thursday evening.
It is not a state visit, so the President will stay with the USA ambassador in London instead of being hosted by the Queen.
"They have knives and instead there's blood all over the floors of this hospital", Trump said.
More than 60,000 people have signed up to demonstrate in London on Friday when protesters intend to fly a large balloon over parliament portraying Trump as an orange, snarling baby.
"I know he loves the east coast, he loves this property more than maybe anywhere else in the world, so I certainly hope he can get out here".
Trump then even went as far as hitting out at Theresa May after she criticised him for the retweets.
May will host a black-tie dinner for Trump there, attended by senior ministers and about 100 business leaders, including from Blackstone group, Blackrock, Diageo, McLaren and Arup.
According to a notice posted on the embassy's website on Tuesday, "Numerous demonstrations are being planned for July 12 to 14, 2018, surrounding" Trump's visit.
Eric Trump used his visit to Balmedie to speak about his family's love of Scotland and the UK.
However, despite the welcome from May, many Britons remain deeply opposed to Trump's visit.
In anticipation of the unprecedented vitriol directed at a serving president, the USA embassy told Americans to keep a low profile and "exercise caution if unexpectedly in the vicinity of large gatherings that may become violent". "If a balloon flying over London makes people laugh, I think that's absolutely worth it", she says. "Are you honestly saying that the right to protest, the right to assemble, the right to free speech is limited by the ridicule it might cause to someone else?"
Trump and his wife, First Lady Melania, will land at London's Stanstead airport after attending a North Atlantic Treaty Organisation summit in Brussels.
Donald Trump is due to touch down in Britain for a four-day trip that is expected to leave taxpayers with a police and security bill of up to £10 million.
Later that day, she will rejoin the President at Windsor Castle where they will meet the Queen and have tea with her.
Speaking to the Sunday Times, May said her husband was "looking forward to meeting Melania", adding that he "has been out and bought a new suit".