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The Biggest Deepfake Porn Website Is Now Blocked in the UK
(www.wired.com)
This is a most excellent place for technology news and articles.
First line of the article:
This isn't (yet) the UK blocking access to them as part of a Great Firewall of Britain thing. This is the sites themselves blocking visitors from the UK, the same as porn sites for various US states.
As with porn sites, it'll be using the geoIP tag of your IP address, which is notoriously unreliable, especially near geopolitical boundaries.
Using a VPN or even a third-party (rather than your ISP's) DNS server will often get around them. However, doing so will eventually probably get you in trouble.
Sadly being an island, the unreliability near border boundaries isn't an issue, except for northern Ireland