First day in the UK for Trump, he abuses the London mayor on Twitter shortly before Air Force One landed at Stansted Airport near London ('Nasty' seems to be Trumps go to word for the month 😆).:

"@SadiqKhan, who by all accounts has done a terrible job as Mayor of London, has been foolishly 'nasty' to the visiting President of the United States, by far the most important ally of the United Kingdom,"

"He is a stone cold loser who should focus on crime in London, not me."

... and although hard to tell, appears to touch the queen's back during dinner, which is a major violation of royal protocol. Royal protocol dictates that one must not touch the queen unless she offers her hand first. Former first lady Michelle Obama violated this rule in 2009 when she hugged the queen during a visit to the UK.

More photos and info of Trump attending the State banquet with the Queen at Buckingham Palace: Click Here