What changed?
The prossies of yore got older.
(my age of course, as the paying customer, isn't very relevant).
Prices. It used to be a fiver for a quickie in Glasgow. Now it's more than that in most third world countries and even Europe rarely goes below a tenner.
The Internet. Apart from saunas/brothels it means you don't really see what you get in advance but have to 'evaluate' a potentially dodgy photograph. Less 'adventure' to it.
Safe sex is probably more the norm due to better education.
Less personal service. The Internet has maybe engendered that. The feeling that everything is relatively public. Before there was a greater sense, in my mind at least, that it was a secret arrangement between two people and no-one else knew or needed to know anything. (Now we assume she is logging everything, checking profiles, discussing it with her fellow fannyflappers, as we too discuss her looks, service and 'magic triangle' in terms a little more to the point than that but still subject to pressures of more public morality.)
'Streetwalking' has more or less disappeared from Britain's streets and pubs and become a dirty word even among punters. It was once the most normal way of finding a prostitute (and of course they weren't
all drug-addicted, disease-ridden, thieving bastards as police and social workers would have us believe, though quite a few doubtless were.) And to think it was a time-honoured
locum and from the earliest days of civilisation no less!
I've not been to London much lately but I imagine phone-box cards may have disappeared or at least become thinner on the ground.
Magazine and shop-window adverts, coyly worded. Political correctness would be 'offended' at such things now (although a few overpriced whores find their way into the cheapest tabloids and also some newspapers of some countries abroad). Even whores that can't afford a computer manage to borrow a friend's or use an Internet cafe.
This forum! One of the few good changes to enter the world of punting!