The Trump administration has been labelled “inept”, insecure and incompetent in leaked emails from the UK ambassador to Washington.
Sir Kim Darroch said that the White House was “uniquely dysfunctional” and “divided” under Donald Trump.
But he also warned that the US president should not be written off.
The Foreign Office said the leak of the memos to the Mail on Sunday was “mischievous” but did not deny their accuracy.
The White House has not yet responded to the revelation of the contents of the memos, but it could test the so-called “special relationship” between the US and UK.