Re: How does it work in practice?
I'd read (but now can't find the reference) that the site is expected to do age checks (only on UK browsers) via either a credit card transaction, or by checking details against (government provided?) records (passports or something?). I'm sorry, I really wouldn't trust those who run porn sites to behave responsibly with personal data on the UK's population, or with credit cards.
But apparently the punishment on non-British porn sites that don't cooperate? They lose the ability to charge UK credit cards. But as any that *do* charge credit cards are clearly providing an age verification service, the only ones left will be the ones that make their money from affiliate links and hosting dodgy malware-laden adverts and so won't care about the punishment.
I would like to know though whose job it is to constantly patrol the world's porn sites looking for which sites do or don't do age verification.