Here's an example of another US based company refusing to comply with UK internet law and how that's going:
Lawyer Myles Jackman, who specialises in sexual liberties and obscenity law, said the case lays bare one of the practical weaknesses of the OSA - that the UK regulator has “no right imposing fines on US domiciled companies that they have no right to collect”.
“The UK government has no jurisdiction over the American Constitution,” he said, adding that Ofcom could decide to issue enforcement proceedings in the US as they have threatened but that they would “seem destined to fail”.
He believes in order to retain “credibility” Ofcom will be left no choice but to block 4chan on UK internet service providers (ISPs), making the site inaccessible to users in the country. But he points out this will be easy to work around for those with VPNs.