No major arrests yet, but there's this independent investigative journalism outfit in London called Exaro News.
Exaro filed freedom of information act requests with all 43 police forces in England and Wales, and found 30 "major" investigations into "child sex abuse by groups," which is pedo rings.
The story is behind a paywall, which one could access by signing up for a 7-day trial, but I haven't done that yet for some reason. If someone does get the full story from Exaro, fill us in.
Just to recap, that's 30 "major" investigations, not counting Scotland.