Foreign prostitutes: the facts
According to some terribly earnest do-gooder on the TV (I apologise - I wouldn't normally watch, but the local PropagandaNews was on just before the rugby), "ten years ago one in four prostitutes was a foreigner, now it's the other way round". That is, she's claiming that one in four foreigners is a prostitute. Given that London (I assume she means in London!) has over two million foreigners living in it, that comes to over half a million hookers.
It was on the telly so it must be true.
My copy of the A-Z has 120 pages of indexes, with approx 500 streets per page. That's 60,000 streets, or roughly ten hookers per street. Assuming they each work 40 hours a week, there should be, on average, 2.3 hookers on every street at any time.
This is, of course, a Good Thing, as it means that there's Competition, which will drive prices down and quality up.