Unwelcome

According to British newspapers including The Times of London and The Guardian, which cited unidentified British government sources, the White House had suggested that Mr. Trump could stop by Downing Street after visiting Turnberry, one of his golf resorts in Scotland, during a trip to Europe.

  NYT

"A trip to Europe." It's the G20 summit.

Mr. Trump might come to Downing Street to meet Prime Minister Theresa May for informal talks as part of any such visit, but final confirmation would probably happen just 24 hours before, to minimize the risk of disruption, the newspapers reported. Or he might visit Mrs. May at the prime minister’s country residence, Chequers, which is about 40 miles northwest of London and more isolated.

[...]

Sarah Huckabee Sanders, the deputy White House press secretary, described the reports as “not accurate” and said there were no plans for Mr. Trump to go to Britain this month.

James Slack, a spokesman for Mrs. May, said, “I am not aware of any plans for the president to visit the U.K. in the next few weeks.” 

Let me guess. They floated a balloon to see if he could get into England without protesters and promptly discovered the answer.