Unlike hamster forums, Kiwifarms, and other "express yourself freely online" websites, NAS is under the radar enough that I never revived a "OI MATE YOU BETTER COMPLY OR WE'LL SEND THE BOBBIES AFTER YOU" letter.
However, if any poor members here are unlucky enough to have been born in and unable to escape from the UK, I will provide you with a unique and individual VPN connection to the site upon request.
@sun no idea, but probably not. From what I heard, the British monarchy sent letters to websites visited by UK citizens (of which they keep records, meeting some threshold). I doubt they will outright block anyone, but I figure I’d offer for anyone who wants keep the djinn in the bottle.