A UK regulator today fined Reddit £14.5 million ($19.6 million) for not verifying the ages of users. The UK Information Commissioner’s Office (ICO) alleged that the failure to check ages resulted in Reddit illegally using children’s personal information.

“Our investigation found that Reddit failed to apply any robust age assurance mechanism and therefore did not have a lawful basis for processing the personal information of children under the age of 13… These failures meant Reddit was using children’s data unlawfully, potentially exposing them to inappropriate and harmful content,” an ICO press release said.

The ICO findings are based on Reddit’s actions prior to its July 2025 rollout of a system that verifies UK users’ ages before letting them view adult content. But the ICO said it is still concerned about Reddit’s post-July 2025 system because the company relies on users to declare their ages when opening an account.

Reddit today said it will appeal the fine and criticized the ICO for demanding more collection of private information. “Reddit doesn’t require users to share information about their identities, regardless of age, because we are deeply committed to their privacy and safety,” Reddit said in a statement provided to Ars. “The ICO’s insistence that we collect more private information on every UK user is counterintuitive and at odds with our strong belief in our users’ online privacy and safety. We intend to appeal the ICO’s decision.”

Reddit pointed to its privacy policy, which says, “We collect minimal information that can be used to identify you by default. If you want to just browse, you don’t need an account. If you want to create an account to participate in a subreddit, we don’t require you to give us your real name. We don’t track your precise location. You can even browse anonymously. You can share as much or as little about yourself as you want when using Reddit.”