The 37-year-old from a London suburb was in custody after being arrested at Windsor Great Park. Suspects in England are not named unless they’ve been charged.

Air restrictions are in place through Thursday in Windsor and also at Chequers, the country mansion where Prime Minister Keir Starmer will host Trump on Thursday.

Thames Valley Police said it was monitoring Windsor from the air, putting armed officers on its streets and patrolling the River Thames to provide extra security during the visit.

Trump’s second state visit

Trump is the first US president to get a second state visit to the UK.

The unprecedented nature of the invitation, along with the expectation of lavish pomp and pageantry, holds dual appeal to Trump.

The Republican president has glowingly praised the King’s late mother, Queen Elizabeth II, and spoken about how his own Scotland-born mother loved the late Queen and the monarchy.

As he left the White House on Tuesday, Trump noted that during his past state visit he was hosted at Buckingham Palace.

“I don’t want to say one is better than the other, but they say Windsor Castle is the ultimate,” Trump said.

He also called the King “an elegant gentleman” and said “he represents the country so well.”

The president is also royally flattered by exceptional attention and has embraced the grandeur of his office in his second term.

He has adorned the normally more austere Oval Office with gold accents, is constructing an expansive ballroom at the White House and has sought to refurbish other Washington buildings to his liking.

Foreign officials have shown they’re attuned to his tastes. During a visit to the Middle East this year, leaders of Saudi Arabia and Qatar didn’t just roll out a red carpet but dispatched fighter jets to escort Trump’s plane.

Starmer has already shown he’s adept at charming Trump. Visiting Washington in February, he noted the president’s Oval Office decorating choices and decision to display a bust of Winston Churchill. During Trump’s private trip to Scotland in July, Starmer visited and praised Trump’s golf courses.

Efforts to woo the president make some members of Starmer’s Labour Party uneasy, and Trump will not address Parliament during his visit, like French President Emmanuel Macron did in July. Lawmakers will be on their annual autumn recess, sparing the government an awkward decision.

The itinerary in Windsor and at Chequers, both well outside London, also keeps Trump away from a planned mass protest against his visit.

“This visit is really important to Keir Starmer to show that he’s a statesman,” said Leslie Vinjamuri, president of the Chicago Council on Global Affairs.

“But it’s such a double-edged sword, because he’s going to be a statesman alongside a US president that is not popular in Europe.”