Question in general about that UK law while there's people here who seem to know things: What about my private, personal website that I run as a hobby? If I have nsfw content on there* that I made myself with (one of (lolamirite)) my own two hands for free with no monetary gain whatsoever, they can't expect me to implement age verification, can they?
* (I don't right now, calm down)
Edit: any non-profit thing, really. AO3?