Sir Kim Darroch has resigned as UK ambassador to the US after days of stinging criticism from President Donald Trump.
Memos from Kim Darroch in which he described the Trump administration as inept were leaked to a British Sunday newspaper, infuriating the U.S. president.
As the spat between the two close allies intensified, Trump said he would no longer deal with the Sir Kim.
In a letter to the Foreign Office, Sir Kim said he wanted to end speculation about his position: “The current situation is making it impossible for me to carry out my role as I would like.”
According to some sources, Sir Kim decided to resign after Mr.Boris Johnson, the former London mayor who could take over from May later this month, refused to support him during the Tory leadership debate on Tuesday night.