I don't understand the question.(ah edit ok) Let me explain how it works here.
There are currently few professions in Britain who are legally (as in written into law) required to report. Police and social workers and... I can't recall off top of my head. But few. People like teachers aren't legally required to report. But people like teachers have professional bodies who regulate them who demand that they report or they can face professional sanctions if they are discovered not to have reported.
Away from that we allow religions to claim huge tax subsidies by accepting that they are charities. Because they are charities, they are expected to follow a basic set of ethical standards set out by the Charity Commission. That does include letting the Charity Commission know about serious crimes, it also involves having adequate child safeguarding policies. So JWs, like every other religion claiming charitable status, falls under those regulations.
So we have a very different system here to the one in other common law countries. For the moment. We have a big judicial inquiry under way called the Goddard Inquiry. What comes out of that will shape child safeguarding for a long time in this country. As will ARC's findings placed alongside it. But that's for the future.
Hope that's a clear enough potted history. You only got it because Kasich is boring me.