Aylo, the parent company of some of the most popular tube sites like Pornhub, Office has partnered on Tuesday it will restrict access to its platforms in the United Kingdom, effective February 2.

Since last year, Pornhub and other Aylo sites have followed suit in the UK Online Safety Act (OSA), which mandates – among other provisions – that websites with pornographic content verify the age of visitors before showing them content inappropriate for minors.

Instead of verifying the age of its users, Aylo blocks access to platforms like Pornhub in the UK entirely; however, UK users who have verified their identity can still use their accounts.

“Despite the clear intent of the law to restrict minors’ access to adult content and commitment to implementation, after 6 months of implementation, our experience strongly suggests that OSA has failed to achieve that goal,” Aylo said in a statement. “We believe this framework of practice has diverted traffic into darker, uncontrolled corners of the internet, and has also put the privacy and personal data of UK citizens at risk.”

Ofcom, the UK regulator that enforces OSA, disagreed with Aylo’s introduction of the law.

“Pornography services have a choice between using age checks to protect users as required under the Act, or to block access to their sites in the UK,” Ofcom said in a statement to TechCrunch. “There is nothing stopping technology providers from developing solutions that work at the device level, and we would encourage the industry to continue to do so if they can prove that it is very effective.”

Age verification technology proved controversial as it toured the world. While children’s online safety is a pressing concern, privacy advocates argue that the type of cloud-based age verification methods mandated by legislation like OSA harm adults by collecting swaths of highly sensitive data.

“In other jurisdictions, Aylo is often one of the top platforms to follow, to see traffic diverted to larger, non-compliant sites,” the company said. Sites that do not comply with the OSA should be fined, but Aylo admits that so far, only the forum 4chan has been fined.

Ofcom also disagreed with Aylo’s claim that it did not penalize pornography sites for non-compliance.

“We have taken strong and swift action against non-compliance, launched investigations into more than 80 pornography sites and fined one pornography provider £1 million, with more to come,” Ofcom said.

The decision to block access to the UK coincides with Aylo’s decisions about navigating compliance with age verification laws in the United States. Aylo’s websites are blocked by many US state where age verification is mandated for adult content, because the company believes age verification software opens the door to the threat of data breaches.

These fears are not unfounded. Pornhub, in fact, vulnerable to a data breach of web and mobile analytics provider Mixpanel, which disclosed data about some subscribers to Pornhub Premium. This stolen data IS reported includes information such as users’ email addresses, location, videos viewed, keywords related to the video, and the dates and times they use the site.