"I believe that the people in the UK, Scotland, Ireland, as you know I have property in Ireland, I have property all over, I think that those people they like me a lot and they agree with me on immigration", he said.
Mr. Trump, however, suggested before leaving a North Atlantic Treaty Organisation summit in Brussels on Thursday to head for London, that Britons in general agree with his policies, in particular his tough stance on immigration.
He said: 'I am going to a pretty hot spot right now with a lot of resignations'.
"I'd like to see them be able to work it out so it could go quickly".
It has been dubbed Storm Trump and the country is braced for a United States presidential visit that has split opinion like never before.
On Wednesday, the Guardian newspaper reported "the United Kingdom police mobilisation for Trump's visit would be the largest since the 2011 English riots", when London was shocked by five days of violence and unrest, with wild scenes of looting and arson, met by mass deployment of 10,000 police.
Some 77 per cent of Britons have an unfavourable view of Trump, according to a poll by YouGov with 1,648 respondents.
But his agenda reveals that he will largely avoid London - where tens of thousands plan to protest against him and a 20-foot balloon that depicts him as an angry orange baby will fly over the Houses of Parliament in Westminster.
During his news conference on Thursday, the U.S. president also appeared to refer to Ireland as part of the United Kingdom.
Who's a big baby?
But Brexit champion Nigel Farage predicted there would be a "real clash" on Brexit.
Trump is technically on a lower-level working visit this week. After the visit, Trump will decamp to Finland for a one-on-one with Russian President Vladimir Putin on July 16.
Britain "is in somewhat turmoil", Trump said before departing Washington, remarking that dealing with Putin might surprisingly be the easiest part of the European trip.
Trump will spend Thursday night in London at Winfield House, the official residence of U.S. Ambassador to Britain Robert "Woody" Johnson.
May reached out to him just days after Mr. Trump was inaugurated, extending the invitation for a coveted state visit that would be hosted by Queen Elizabeth II, but that gesture has proved far more controversial than expected as Mr. Trump has shown little interest in maintaining "diplomacy as usual" with European allies.