All the way!
Places like Harvey Nicks, The Ritz Casino, the Dorchester, the Mandarin etc. are populated by "courtesans" who never advertise but hang out in those places.
Last year, my company arranged a conference at the Mandarin, which is right opposite Harvey Nicks, in the evening, I and another guy went over to the Harvey Nicks bar, my whoredar was working very well and I spotted two fit blonde Russian girls.
Casually waved a few £50 notes while ordering champagne, knew I had got their attention, smiled to them, they smiled back then invited them over to try out the champagne.
5 minutes later, my tongue was down the throat of one of the girls and the other guy wasn't doing badly with his girl either!
Took both girls back to the hotel.
Their English was poor but French was good.
OWO, CIM, Facial.
As we had two girls, we took turns spit roasting each.
I like Harvey Nicks!