The Prime Minister “dropped in” on a meeting between Foreign Secretary Dominic Raab and senior White House adviser Jared Kushner, Downing Street has confirmed.
Boris Johnson’s spokesman told reporters during a briefing that he had made a “short drop-in” during talks at the Foreign Office between Mr Raab and Mr Kushner about the situation in the Middle East.
Mr Kushner, who is US President Donald Trump’s son-in-law, arrived in London having this week travelled on a high-level Israeli delegation to the United Arab Emirates on the first direct commercial passenger flight between the two countries.
The flight traversed Saudi air space following a US-brokered deal by the UAE to normalise relations with Israel.
Number 10 defended the Conservative Party leader’s decision to join a meeting with a figure so close to Mr Trump now that campaigning for the next presidential election has stepped up before the November poll.
Mr Trump is fighting for a second term in the Oval Office against a challenge from Democratic rival Joe Biden.
“It was specifically a discussion about the Middle East peace process, which I think we all would agree it is important we continue to be fully engaged in that work,” the Prime Minister’s spokesman said.
Asked whether the Prime Minister would be “endorsing” Mr Trump in the November election, the No 10 spokesman said: “The long-standing position in the UK is that elections are a matter for the electors of that particular country.”
The UK is involved in negotiations with the US as it seeks to strike a post-Brexit trade deal with the world’s largest economy.