Londoners have mocked US president Donald Trump after he made an error in his continued takedown of Sadiq Khan.
Mr Trump called the London Mayor a “national disgrace who is destroying the City of London” as he criticised Mr Khan over a spate of fatal attacks which took place in the capital on Friday and Saturday.
But people were quick to point out that he had capitalised the word "city", meaning he had accidentally referred to the City of London, otherwise known as the Square Mile.
Peter Estlin is the Lord Mayor of the City of London while Mr Khan is the Mayor of London.
The phrase City of London was trending on Twitter as people replied to Mr Trump to explain the difference.
Last week, the US President referred to Prince Charles as the Prince of Whales , rather than the Prince of Wales, in a tweet.
One person posted a photo of Mr Estlin, writing: “This is the Mayor of the City of London. Most Londoners don't even know his name. I certainly don't.”
While another added: “Khan's the top boy in the GLA which includes the city of London and all of greater London. Lord Mayor is just a ceremonial post.”
Scotsquad creator Joe Hullait wrote: “*the city [lowercase] of London. Different to the City of London,” alongside a screengrab of an explanation of the difference.
Another posted a photo of Mr Estlin saying Mr Trump's father, Fred, had wasted "a lot of money on his education."
Read More
"For all you not Brits. This is the actual Mayor of the City of London. There are many YouTube vids to explain. Fred wasted a lot of money on Donny’s education," he wrote.
Mr Trump was responding to a tweet by Texas journalist Jessica Fletcher who said: “Khan is the reason I don’t feel like visiting London anytime soon.”
It came hours after the President had retweeted commentator Katie Hopkins who described London as “Stab-City” and said “this is Khan’s Londonistan” in the wake of five stabbings in the capital in 20 hours.
Mr Trump wrote: “London needs a new mayor ASAP. Khan is a disaster - will only get worse!”
Labour leader Jeremy Corbyn jumped to Mr Khan’s defence tweeting: “Absolutely awful to see @realDonaldTrump using the tragedy of people being murdered to attack the Mayor.
“@SadiqKhan is rightly supporting the police to do their job while Katie Hopkins spreads hateful and divisive rhetoric. They seek to divide at a time we need to come together.”
Mr Khan has not responded publicly to Mr Trump's criticism.
His spokesman said the mayor had "more important things to do than respond to Donald Trump's ill-informed tweet".
But he tweeted this morning: "Violent crime has no place in our city, and there’s no higher priority for me than Londoners’ safety."
The US president and London mayor have clashed in the past, including on Trump’s state visit at the start of June.
Trump branded the mayor a “stone cold loser” in a two-part tweet as he touched down in Britain on 3 June.
The Labour mayor then accused the president of “playground behaviour” and claimed he was a “poster boy” for the far-right.