Hypocritical of the diplomatic establishment to maintain the US administartion should not dictate who will be UK ambassador in Washington. This is exactly what Jack Kennedy did in 1961. He requsted David Omsby-Gore be appointed UK ambassador in Washington something Old Etonia Macmillan was happy to do. Here is a brief bio of O-G from Wikepedia
Ormsby-Gore was born in London, the second son of William Ormsby-Gore, 4th Baron Harlech, a Conservative politician, and Lady Beatrice Edith Mildred Gascoyne-Cecil. British Prime Minister Robert Gascoyne-Cecil, 3rd Marquess of Salisbury, was his maternal great-grandfather. He was educated at St Cyprian's School, Eton College and New College, Oxford.
So Eton, Oxford and pure UK establishment ie straight out of the born to rule political elite we and the US have just voted against.
Poor Nigel Farage. He was born in the wrong bed, went to the wrong school and never went to University let alone Oxford. Things have not changed in the intervening 50 odd years and never will until we have a real revolution in the UK and have a real meriticracy.