Providing evidence and proving any charges in a court from this proposed new legislation could be interesting. Beyond entrapment, which seems unlikely, how are they going to do it? In the case of a brothel of trafficked or controlled women, ok, you may have a compliant and cooperative witness willing to give evidence. But with the likes established, professional/organised, independents and agencies, who could advertise and make clear that monies are for their 'time only' , would they be required and willing to provide statements and give evidence against their clients, then risk making their businesses untenable? Again, seems unlikely.
( I don't have enough experience to even guess at how the saunas could handle and adapt to that sort of legislation) .
I can see them making life more difficult for sites like AW and VS; and maybe the indys will have to start setting up their own webpages again. But unless you're silly enough to be soliciting on the street or getting caught in gang controlled brothels, I don't see how they expect this to work. For most experienced, sensible, clued-up punters who know how to make reliable choices and safer decisions, the risk of a criminal record may well be more theoretical than practical?