If 4chan continues to ignore Ofcom, the forum could be blocked in the UK. And 4chan could face even bigger fines totaling about $23 million or 10 percent of 4chan’s worldwide turnover, whichever is higher. 4chan also faces potential arrest and/or “imprisonment for a term of up to two years,” the lawsuit said.
4chan’s actual legal response to this can be summarized as “We are incorporated in Delaware which has not been subject to UK law since 1783. See the Treaty of Paris”.