Mr. Trump made waves yesterday when he said that he believed that Britain could now leave the E.U., even if it failed to make a deal with Brussels by the Oct. 31 deadline.

Mr. Trump dangled the prospect of a “phenomenal” trade deal with the U.S. if Britain breaks from the bloc. He said “everything will be on the table” in negotiations for such a deal, including opening Britain’s public health system to American competitors — an assertion that caused an uproar and which he later walked back. Here’s our fact check of Mr. Trump’s claims.

Protests: Many in Britain saw the president as an opportunist trying to pursue a trade deal that would benefit the U.S. Jeremy Corbyn, the leader of the opposition Labour Party, spoke to anti-Trump demonstrators, condemning his war of words with London’s mayor as well as the trade deal he described. The turnout at protests was lower than anticipated.

Other stops: Mr. Trump also met with Nigel Farage, a major critic of Mrs. May. Boris Johnson, the former foreign secretary whom Mr. Trump has endorsed to be Mrs. May’s successor, declined a one-on-one meeting, but he spoke with Mr. Trump by phone.