I worked in London for 3 1/2 years. It is all legal there. The only thing they really care about policing are street walkers and genuine sex trafficking (of which there is quite a lot, you get all the Eastern Euro girls who sadly get sold into it.)
But in general, what we do here, online advertising, etc, they could care less about.
So having provided both here and there I pretty much concur with what Fancy said (and if I am not mistaken, being Irish, she is probably familiar with the UK culture and mindset on it.)
I never once had to worry about screening, cops, getting arrested and all that bullshit. Clients could walk into my in-call and we could freely discuss services, remuneration and so forth. That felt great and worry free.
However, I did find that there was a huge over saturation of providers bc of this. Especially in a city as big as London. Maybe if I had been elsewhere it wouldn't have been so bad.
So, what I found, was that while over here, I would have my good set of regular clients who would always come back to me (some, I had for like 2 years straight).
Over there, I would meet a gent and he would see me maybe 3 or 4 times and then move on. How can you blame them when there is so much tasty fruit hanging around just begging to picked and tasted?
There were also TONS of girls willing to serve the whole enchilada for like 60 or 80 quid....so if he could get that, why would he bother paying me 100 quid for just a fbsm? That also led to pretty much every single client thinking I would be willing to give more bc pretty much every chick would. There was less of a distinction between companion and fbsm.
It definitely hurt my business and I had to hustle way more than I have ever had/have to here.
Given those differences, I think I prefer things the way they are here. We have a pretty good "fair market value" when it comes to rates, so even though we have to go through the hassle of screening and so on and so forth, I know I am guaranteed x amount for services rendered, and I won't be hassled for more service than that which I advertise (by most gents.)