Prince William's girlfriend Kate Middleton's best friend, Emma Sayle, who is a churchgoing daughter of a diplomat, has been revealed to be the owner of a sex club called as the Killing Kittens.
The club caters to single women and couples, and its membership depends on above-average looks and earnings.
Sayle, 30, launched the club three years ago after spotting a gap in the market for classy, female-friendly swinging sessions, and around 70 per cent of those registered are public school-educated.
Journalist Charlotte Hunt, one of Sayle's old school pals, was allowed a peek into a hush-hush Killing Kittens party in a house in London's wealthy Mayfair.
"A man can't get in unless he's taken there by a woman. The ratio stays pretty constant at 60/40 or 70/30 - just enough testosterone to make things relaxed," the Sun quoted Hunt as saying.
"There are no drugs - you get thrown out if you're found taking them - and no cameras or mobile phones.
"This is a strictly secret event. So much so that the location of the venue is only released the day before the party.
"Many of these high-flying public school products are attracted by the shield of secrecy.
"This party isn't men paying women for sex, this is a woman saying to other women, 'Pay me, and you can come and have sex with women and men.'"
"This is about sex - sex in the open, narcissistic sex, loving sex, drunken sex, no-strings-attached sex, no blame, no guilt, no-holds-barred sex, basic, fluorescent, animalistic sex.
"It doesn't take a great brain to work out there's an element of risk," she stated.
But while partygoers are rigorously vetted to ensure an elite crowd, Sayle's standards fall short of STI checks or a safe-sex policy, and her parties are nowhere cheap either.
Couples pay 150 pounds per bash or a 300 pounds fee and 75 pounds per night thereafter.