A 20-foot-tall blimp of President Trump depicted as a diapered baby is displayed July 13 in Parliament Square in London to protest his visit to the U.K. (Matt Dunham/AP)

President Donald Trump spent just four days in Britain in July, but a lot happened in that time.

Londoners flew a giant blimp depicting the president as a diapered baby above Parliament Square. Tens of thousands of protesters, possibly more, took to the streets to rally against his visit in one of the largest demonstrations there since 1 million people gathered to protest the war in Iraq.

And when Trump visited Queen Elizabeth II for tea, he famously walked in front of her, eclipsing the world’s longest-serving monarch and prompting outrage among the British on Twitter.

So not all Brits were happy to learn this week that his short stay cost police nearly $24 million, according to a recent police estimate.

On Thursday, a blog post from the National Police Chiefs' Council said the visit required almost 10,000 officers nationwide, who served a combined 26,000 shifts. “The majority of forces had to cancel officers' rest days and extend the length of the shifts,” the council wrote in its post.

“This was a significant operation with the president visiting four force areas and protests taking place in many others,” it said.

CNN reported that Trump’s visit cost 10 times more than former president Barack Obama’s trip to the United Kingdom in 2016, which ran up a bill of about $2.2 million.

Trump has faced harsh criticism in Britain, particularly after claiming this year that a hospital in London was like “a war zone for horrible stabbing wounds.”

“Yes, that’s right, they don’t have guns,” he said at a meeting of the National Rifle Association in May. “They have knives, and instead there’s blood all over the floors of this hospital. They say it’s as bad as a military war zone hospital.”

"Knives, knives, knives,” he went on to say, making gestures as if he were stabbing someone. The comments came after knife attacks in Britain, as The Post’s Adam Taylor reported at the time.

When news broke about the cost of Trump’s visit, many Brits took to social media to call out the visit as a waste of money. “Did they ask the taxpayer if we wanted him here? No,” one user wrote.

“I did NOT invite him, I did NOT want him here #NotWelcomeHere,” another wrote, demanding a refund.

“How many nurses would we get for that money?” another user asked.

One protester even went so far as to try paragliding toward Trump at the president’s Turnberry golf resort in Scotland. The person carried a banner that read: “Trump: well below par #resist.”

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