Comment by zimpenfish

IANAL

> any websites that let users interact with other users has to police illegal content on its site and must implement strong age verification checks.

But I believe you only need age verification if pornography is posted. There's also a bunch of caveats about the size of user base - Ofcom have strongly hinted that this is primarily aimed at services with millions of users but haven't (yet) actually clarified whether it applies to / will be policed for, e.g., single-user self-hosted Fediverse instances or small forums.

I don't blame people for not wanting to take the risk. Personally I'm just putting up a page with answers to their self-assessment risk questionnaire for each of my hosted services (I have a surprising number that could technically come under OSA) and hoping that is good enough.