Prime Minister Boris Johnson welcomed the deal to normalise relations between Israel and the United Arab Emirates during a meeting with senior White House adviser Jared Kushner on Thursday.
Mr Johnson “dropped in” on a meeting in London between Mr Kushner and Foreign Secretary Dominic Raab to discuss the Middle East peace process, his office told Reuters.
The meeting comes just two months ahead of the US election in November, when President Donald Trump will face Democrat Joe Biden.
Earlier this week Mr Kushner, who is Jewish and married to Mr Trump's daughter Ivanka, flew on the first ever commercial flight to the UAE from Israel.