A lot of US websites initially geoblocked EU to avoid dealing with GDPR, for example.
A lot of US websites initially geoblocked EU to avoid dealing with GDPR, for example.
In other non-UK-based cases, geo-blocking is the answer being used by some people.
Per https://geoblockthe.uk/, they state:
"Luckily OFCOM (the UK Government department responsible for 'enforcement' of these new rules) have confirmed that blocking people in the UK from accessing your website is a perfectly legal and acceptable way to comply with the law.".
"This website is not available in the UK. Ask your representative about the UK Online Safety Act for more information".
I'm also not familiar with UK law, which may or may not deem that be a sufficient counter-measure against VPNs. Also, if the forum's operator is based in the UK this also might not be an option.