Yet Trump's schedule will largely keep him out of central London.
Britain's Prime Minister Theresa May and her husband Philip May greet Trump and First Lady Melania at Blenheim Palace.
Here is what 20 people who we spoke to on the streets of London thought about the USA president's upcoming visit.
"They like me a lot in the UK", Trump told a news conference in Brussels, where he had spent the early part of the week shaking up NATO's annual summit, shortly before lifting off for London on Thursday.
The trip coincides with a tumultuous week for May after two senior ministers resigned in protest at her plans for trade with the European Union after Britain leaves next March. "I think that's why Brexit happened".
A high metal fence has been erected around the US ambassador's central London residence where Trump will spend Thursday night and the embassy has sent out an alert warning Americans in London to keep a low profile in case protests turn violent.
Rarely has a foreign leader been so mocked on an official visit - London's mayor, a Muslim who has challenged Mr. Trump's world view - okayed the balloon, which is an apt symbol of Mr. Trump's tempestuous relationship with Britain, traditionally the United States' closest ally.
Later, Trump and his wife attended a black-tie dinner hosted by May at Blenheim Palace, the birthplace of Winston Churchill, before returning to Winfield for the night.
Trump will depart the North Atlantic Treaty Organisation summit in Brussels on Thursday afternoon local time and head to London for a greeting ceremony. Vince Cable, the leader of the pro-EU Liberal Democrats, said, "Most of us don't think he is particularly good judge on Brexit or anything else". "We have come to an agreement which absolutely delivers what people voted for", she said in a statement.
A large police presence has been building up outside the palace in Oxfordshire and BBC News correspondent Duncan Kennedy said about 500-600 protesters bearing placards were demonstrating before Mr Trump's arrival.
Trump hopes to build on that momentum when he sits down with Prime Minister Theresa May and Queen Elizabeth II.
However, the Scottish Government approved the plans with the UK Supreme Court eventually rejecting Mr Trump's legal challenge in 2015.
Trump is due to leave Britain on Sunday for talks in Helsinki the following day with Russian President Vladimir Putin, whose government stands accused by May's of unleashing a lethal nerve agent in the city of Salisbury.