Donald Trump launched an extraordinary attack Monday on outgoing British premier Theresa May, following the leak of diplomatic cables highly critical of his presidency.
London has been scrambling to stem the damage caused by the weekend release of confidential telegrams in which its envoy to Washington, Kim Darroch, described the US leader as "inept" and his White House as "uniquely dysfunctional."
"I told her how it should be done, but she decided to go another way."
May's office called the leak "unacceptable," but said "the prime minister has full faith in her ambassador to Washington."
"As you'd expect, contact has been made with the Trump administration setting out our view that we believe the leak is unacceptable."
Foreign Secretary Jeremy Hunt said the culprit, if identified, would face "very serious consequences."
His US affairs deputy Alan Duncan told parliament police could launch their own investigation "if evidence of criminality is found."
Wintour wrote that Sedwill "may not fill that bill, but Nigel Farage -- who pretty openly campaigned for the job before Darroch's appointment in 2016 -- does."