The United Kingdom has announced a sweeping ban on social media use for children under 16, with Prime Minister Keir Starmer's government targeting major platforms including TikTok, YouTube, and others. The policy represents one of the most significant government interventions into children's online activity attempted by a major Western democracy.

Under the proposed measures, social media platforms would be required to implement age verification systems to prevent users younger than 16 from accessing their services. The government framed the move as a child safety initiative, citing concerns about the mental health impacts of social media on young people and the exposure of minors to harmful content.

The announcement places the UK alongside Australia, which passed similar legislation in late 2024, in taking a legislative approach to restricting minors' access to social media platforms. Supporters argue that self-regulation by tech companies has proven inadequate to protect young users, while critics raise concerns about the technical and civil liberties implications of mandatory age verification.

Platform companies have not yet issued formal responses to the UK announcement. Enforcement will hinge on the government's ability to compel platforms to adopt reliable age-checking mechanisms, a technical and legal challenge that has complicated similar efforts in other jurisdictions. Details on implementation timelines and penalties for non-compliant platforms are expected to follow.