President Donald Trump called Sadiq Khan a ‘stone cold loser’ just minutes before he touched down in the UK for his three day state visit.
As Air Force One landed at Stansted Airport, the US president said Khan had been ‘foolishly nasty’ to him.
Yesterday, the London mayor criticised the state visit and said the UK should not be rolling out the red carpet for Trump.
He compared the president to a ’20th century fascist’ in an opinion piece for the Observer.
Donald and Melania Trump landed in the UK just before 9am, but not before the president fired off two tweets taking aim at Khan.
Trump criticised Khan’s height, called the mayor a ‘loser’ and said he had done a ‘terrible job’ in London.
A spokesman for Sadiq Khan said the comments were ‘childish insults’ and that they should be ‘beneath the president of the United States’.
The president tweeted: ‘@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.’
He added: ‘Kahn reminds me very much of our very dumb and incompetent Mayor of NYC, de Blasio, who has also done a terrible job – only half his height.
‘In any event, I look forward to being a great friend to the United Kingdom, and am looking very much forward to my visit. Landing now!’
A spokesman for Sadiq Khan said: ‘This is much more serious than childish insults which should be beneath the President of the United States.
‘Sadiq is representing the progressive values of London and our country, warning that Donald Trump is the most egregious example of a growing far-right threat around the globe, which is putting at risk the basic values that have defined our liberal democracies for more than 70 years.’
Sadiq Khan says UK is wrong to ‘roll out the red carpet’ for Trump
Writing on Sunday, Khan said: ‘President Donald Trump is just one of the most egregious examples of a growing global threat.
‘The far-right is on the rise around the world, threatening our hard-won rights and freedoms and the values that have defined our liberal, democratic societies for more than 70 years.
‘Viktor Orban in Hungary, Matteo Salvini in Italy, Marine Le Pen in France and Nigel Farage here in the UK are using the same divisive tropes of the fascists of the 20th century to garner support, but with new, sinister methods to deliver their message.
‘And they are gaining ground and winning power and influence in places that would have been unthinkable just a few years ago.’
Khan said history would judge the state visit as wrong and we would look back with ‘regret’.
Thousands of people are planning to march through London on Tuesday against the president’s visit, when the Trump baby blimp has been given permission to fly.