A London charity is closing after a shocking report said women hired to entertain business, political and entertainment bigwigs at its secretive men-only charity fundraising gala in London were groped and sexually harassed during a sordid six-hour soiree.

About 130 hostesses — including two undercover Financial Times reporters — took part in the event at the lavish Dorchester Hotel, where auction prizes included tea with Bank of England Gov. Mark Carney and lunch with Foreign Secretary Boris Johnson.

The hostesses were told to wear skimpy black dresses with matching underwear and high heels before being paraded in front of salivating brutes, according to the Financial Times.

“Welcome to the most un-PC event of the year,” announced the host at the start of the Presidents Club Charity fundraiser, according to the article by undercover reporter Madison Marriage.

As a result of the outrage sparked by the report, the club announced that it would close and that it would distribute remaining funds to children’s charities “in an efficient manner,” the BBC reported.

“The Presidents Club recently hosted its annual dinner, raising several million pounds for disadvantaged children. The organisers are appalled by the allegations of bad behaviour at the event asserted by the Financial Times reporters,” the club said in a statement earlier.

The paper said the Presidents Club Charitable Trust had two joint chairmen, London property developer Bruce Ritchie and luxury goods businessman David Meller.

Meller will step down from his senior post at the Education Department — as spokesmen for Prime Minister Theresa May and Labour Party leader Jeremy Corbyn faced questions about pols who attended the event, the Independent newspaper reported.

May’s spokesman said she had felt “uncomfortable” reading about the dinner, while Corbyn’s called it “a gross example of sexual harassment.”

The trust could not be reached for comment.

The black-tie event was attended by 360 figures from British aristocracy, business, politics and the entertainment industry who subjected the women to harassment, lewd comments and “repeated requests to join diners in bedrooms.”

The hostesses reported men slipping their hands up their skirts. One woman said an attendee exposed his penis to her during the event.

The women, who met the criteria of being “tall, thin and pretty,” came from various backgrounds and included part-time actresses, dancers and models as well as students looking to make some extra cash, according to the report.

When they arrived at the Dorchester, they had to sign a five-page non-disclosure agreement — but were not allowed to read its contents or keep a copy of it, the paper reported. They were to be paid the equivalent of about $250 for the night.

One 19-year-old hostess described a creepy exchange with an elderly guest who had asked her whether she was a prostitute. She was not.

“I’ve never done this before, and I’m never doing it again,” she said later. “It’s f–king scary.”

The Financial Times reported that at an after party, a man described as a prominent society figure grabbed a hostess by the waist and pulled her in against his stomach.

“You look far too sober,” he was reported as saying. “I want you to down that glass, rip off your knickers [underwear] and dance on that table.”

Lots put up for auction included a night at a strip club and a course of plastic surgery, with the invitation: “Add spice to your wife,” according to Reuters.

The Presidents Club Charitable Trust said on its website it was founded more than three decades ago to raise money for underprivileged children. It has raised $28 million over 33 years.

In a statement, the Dorchester said it had a zero-tolerance policy regarding harassment of guests or employees.

“We are unaware of any allegations and should we be contacted we will work with the relevant authorities as necessary,” it said.

Martin Sorrell, head of advertising giant WPP, which sponsored a table at the event, told the BBC that the company would no longer support the charity.

Meanwhile, the expose sparked outrage at one charity, Great Ormond Street Hospital, which promptly announced plans to return all previous donations from the fundraiser.

“We are shocked to hear of the behavior reported at the Presidents Club Charitable Trust fundraising dinner,” a spokeswoman said, according to the Express newspaper. “We would never knowingly accept donations raised in this way.”