Yes, it's a thing in the UK especially London. Novikov and Annabel's are prime examples. Other notable examples are Sexy Fish and Scott's.
A word of caution however, you will mostly bump into a bunch of rinsers, scammers and assorted high mileage sex workers past their prime looking for that soft life. The principle difference between the American and British dynamic is that the American ones are very proactive whereas the British ones literally have no rizz whatsoever. 😂
Exactly that, but not so many are British. They're nearly all Easter European (usually pretending to be Russian).
Add to that The Mayfair Hotel, The Sanderson, The Lanesborough, Park Lane, The Met Bar & Light Bar (both now closed), Zuma, I could go on.
Forget any idea that you're going to be Richard Gere rescuing some ditzy girl who isn't really an SP, but somehow ended up there and you just happened to meet her on her first night.
I used to go out a lot in Central London, often to the bars of High end hotels, before going to a club, or after a restaurant. You will see a continual flow of these Grifters, I found it amusing to observe them as they went about their work.
A typical scam is that they'll go to your room, take your money, ask you to shower and when you come out they're gone. They'll spike your drink, threaten to call security, get their BF / Pimp to come up to your hotel room and threaten to blackmail you.
Does it still sound like a good idea?