It has vowed to gather near the United States ambassador's residence in London, where Trump and First Lady Melania Trump will stay Thursday night, and outside Blenheim Palace, wartime leader Winston Churchill's birthplace, which hosts the pair for dinner prior.
"He's come out of the woodwork now and I've seen it the last few days; there's huge positivity for what we've done here".
But it's not simply the protesters, who are expected to dog Mr. Trump throughout his visit, including his weekend in Scotland, but his fraught relationship with political leaders accustomed to harmonious exchanges with US leaders, a tradition of unity that goes back at least to the vital World War II partnership of Franklin D. Roosevelt and Winston Churchill.
U.S. Ambassador to Britain, Woody Johnson, rejected claims that the president might be trying to "avoid" protests, which had been planned months ago, when the president's plans to visit Britain were first announced.
"We need to show the world what millions of people in this country think of the bigotry and the hatred that he represents", Owen Jones, a Guardian columnist who helped organize the anti-Trump demonstrations, told TIME on Monday.
Trump has always been a supporter of Brexit and has expressed enthusiasm for a wide-ranging trade deal with Britain after it leaves the European Union, something heralded by Brexit supporters as being one of the great benefits of exiting the bloc. "But maybe they're taking a little bit of a different route, so I don't know if that's what they voted for".
The President and the First Lady will attend a dinner, hosted by May, at Blenheim Palace - the ancestral home of Winston Churchill - on Thursday evening.
Queen pays tribute to mark 100 years of Royal Air Force
They have a jam-packed itinerary in Dublin including meetings with the Taoiseach, Leo Varadkar, and Irish President, Michael D. The royal fab four made an appearance the 100th birthday celebrations of the Royal Air Force at Westminster Abbey on Tuesday.
Asked in Brussels about the massive demonstrations expected at the next stop of his European trip, Mr. Trump said it was "fine" that there were protests planned.
What is Donald Trump's schedule?
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.
"It's quite nefarious, the groups backing these protests and paying for the signs, large Labour groups", he said.
President Trump and the First Lady are expected to leave the United Kingdom on Sunday.
Eric Trump used his visit to Balmedie to speak about his family's love of Scotland and the UK. Separately, his wife, Melania, will visit war veterans and schoolchildren in a London visit accompanied by Philip May, the prime minister's husband.