Regulate the Britons, not the foreign websites:

“4Chan responds to £520,000 Ofcom fine with AI picture of hamster”

“Companies – wherever they’re based – are not allowed to sell unsafe toys to children in the UK. And society has long protected youngsters from things like alcohol, smoking and gambling. The digital world should be no different,” she said.

https://www.bbc.co.uk/news/articles/c624330lg1ko