We have treaties with other contries to cover most of these cases and customs to cover many others. What the UK is doing is claiming, without having dealt with

We have treaties with other contries to cover most of these cases and customs to cover many others. What the UK is doing is claiming, without having dealt with this via treaty that I am somehow responsible for keeping their citizens off my website. This is not something they can actually do. Now if they made a deal with my country that said that I had to in some way we'd be in a different universe. But currently they do not. As I, and probably many others, see it. If they don't want UK citizens visiting 4chan or whereever they should control the flow of data through their borders better and punish their citizens for data smuggling if they vpn their way around it. It's no different than prohibited goods like automatic weapons. If I send someone in the UK a fully automatic ak-47 (which is legal in my juristiction) then I suspect UK customs will catch it at the border and possibly jail, or at least have a stern talking to the recipient.