He is taking helicopters to his various destinations.
The Queen has met every U.S. president since Harry Truman - except for Lyndon Johnson, who didn't visit Britain while in office - during her 66-year reign.
Trump Baby takes flight as the US President readies to meet with The Queen.
The two leaders will hold talks the following day at Chequers, the 16th-century manor house which is the prime minister's official country residence.
Trump, however, is the most unconventional of modern US presidents and there is some anxiety in Britain about whether he will adhere to protocol.
As he began a four-day visit to Britain on Thursday, Trump, a major supporter of Brexit, told The Sun that he had advised May to go about leaving the European Union in a different way but was ignored.
Though White House press secretary Sarah Huckabee Sanders was quick to issue a statement saying Trump "likes and respects Prime Minister May very much, the prime minister, already on a back foot, will have needed his intervention as much as losing a vote of confidence in parliament".
The comments, made in an interview with tabloid newspaper The Sun, were published Thursday night, just as Trump and May were wrapping up dinner after a red-carpet reception at Blenheim Palace, Oxfordshire.
Trump was greeted at the palace by May, whose government has been rocked by resignations from ongoing tumult over Brexit. I actually told Theresa May how to do it but she didn't agree, she didn't listen to me.
Trump also warned May in the interview that any future trade deal with Britain will not be likely if Britain has a soft exit from the European Union.
"If they do a deal like that, we would be dealing with the European Union instead of dealing with the United Kingdom, so it will probably kill the deal", Trump told the Rupert Murdoch owned tabloid, in reference to May's post-Brexit trade proposals.
"If they do a deal like that, we would be dealing with the European Union instead of dealing with the United Kingdom, so it will probably kill the deal", he told The Sun. On Thursday, Mr. Trump shrugged off the planned protests, telling reporters "they like me a lot in the U.K". He said Johnson, May's now ex-foreign secretary, "would be a great prime minister".
"I shouldn't be the arbiter, as a politician, of what's in good taste or bad taste, what's important is it to be peaceful, and for it to be safe", he said.
He had used a Thursday morning press conference in Brussels to attack the prime minister's Brexit plan and highlight cabinet divisions.
A Downing Street spokesperson told HuffPost UK: "On Friday she is going to have a separate program in London, and because it's in London I'm not able to share the location but she plans to meet veterans and local schoolchildren".
"I think he has done a bad job on crime, if you look, all of the disgusting things going on there, with all of the crime that is being brought in".