Donald Trump has accused Sir Sadiq Khan of being a "terrible mayor" and warned Sharia Law is coming to London - in remarks the Labour politician has rejected as "appalling and bigoted".
Speaking during his keynote United Nations speech in New York, the US President renewed his feud with Sir Sadiq, even swiping at London's first Muslim Mayor over Islam.
He claimed London has been "so changed" because "they want to go to Sharia Law".
"You're in a different country, you can't do that," Mr Trump added.
"Both the immigration and their suicidal energy ideas will be the death of Western Europe if something is not done immediately."
Sharia Law is the religious law of Islam, which guides Muslims' lives according to interpretations of the Koran and other holy texts in the religion.
Interpretations vary depending on the Islamic schools of thought or country.
In some Muslim countries, Sharia Law is associated with tough punishments for adultery, blasphemy and crimes such as theft.
Sadiq Khan has come under fire by Donald Trump during the US President's UN speech
| PAAn opinion poll conducted in March 2024 found that only 23 per cent of British Muslims believe it would be undesirable to have Sharia Law in the country.
The US President also warned that it "cannot be sustained".
Mr Trump declared that "what makes the world so beautiful is that each country is unique".
"But to stay this way, every sovereign nation must have the right to control their own borders," he said.
President Donald Trump during his address at the 80th United Nations General Assembly
| REUTERS"You have the right to control your borders, as we do now (in the US)."
Sir Sadiq almost immediately fired back against the 47th President.
A spokesman for the London Mayor said: “We are not going to dignify his appalling and bigoted comments with a response.
“London is the greatest city in the world, safer than major US cities, and we’re delighted to welcome the record number of US citizens moving here.”
However, Mr Trump's feud with Sir Sadiq dates back to before the 47th President won the 2016 US Presidential Election.
Sir Sadiq had blasted the property-tycoon-turned-politician over his proposed travel ban on Muslims in 2015, labelling the suggestion as "outrageous".
Mr Trump and Sir Sadiq continued to lock horns on social media throughout his first stint in the Oval Office, with the London Mayor calling on Theresa May to cancel the President's first state visit in 2017.
“I don’t think we should roll out the red carpet to the President of the USA in the circumstances where his policies go against everything we stand for,” Sir Sadiq said at the time.
The London Mayor soon after gave anti-Trump activists permission to fly a protest blimp of the President.
The blimp depicted Trump, who blasted Khan following the 2017 London terror attack, as a crying baby wearing a nappy.
Mr Trump and Sir Keir Starmer even clashed on Sir Sadiq during a lengthy press conference with journalists at the 47th President's Turnberry golf resort in July.
The pair continued to exchange further barbs after Mr Trump's second State Visit.
Mr Trump had also described Sir Sadiq as "among the worst mayors in the world".
He added that he "asked that he not be" at the banquet.
Speaking on Sunday, Sir Sadiq said that "I've not really given much thought" to Mr Trump's comments.
"I am indifferent to President Trump," he said. "I literally (have) more important things to worry about."
Meanwhile, Mr Trump took aim at Sir Sadiq on Air Force One, saying: "I think he's done a terrible job".
"Crime in London is through the roof," he added.
"They Mayor of London Khan, Mayor Khan has done a terrible job.
"And on immigration, he's a disaster. I asked that he not be there (banquet). He wanted to be there, as I understand, I didn't want him."
However, Health Secretary Wes Streeting quickly came to Sir Sadiq's defence, saying that the London Mayor "is not trying to impose Sharia Law on London".
"This is a Mayor who marches with Pride, who stands up for difference of background and opinion, who's focused on improving our transport, our air, out streets, our safety, our choices and chances," Mr Streeting added.
Our Standards: The GB News Editorial Charter