What happened
On 30 October 2026 the UK High Court dismissed a legal challenge by Meta, TikTok and X against Ofcom's February information notices issued under the Online Safety Act 2023. Ofcom had demanded detailed content-moderation metrics, including how many posts were removed or had visibility restricted and how many users were exposed to harmful content. The platforms argued the requests were disproportionate and X called them 'the most burdensome information request X has received from any regulator.' The Court rejected those arguments and upheld Ofcom's information-gathering powers. The ruling is one of the first tests of the UK online safety regime, which carries fines of up to 10% of global turnover for the most serious breaches; a separate case over how Ofcom calculates fees and fines is still pending.
Why it matters
The ruling confirms the UK regulator can compel platforms to disclose the inner workings of their content-moderation and recommendation systems — the algorithmic and AI-driven machinery that decides what content is shown and suppressed. It materially strengthens Ofcom's enforcement posture over how large platforms' AI/algorithmic systems expose users to harmful content, and binds Meta, TikTok and X (and, by precedent, other in-scope platforms) to algorithmic transparency to the regulator.
Action needed
In-scope regulated platforms (and any provider subject to Online Safety Act duties) should ensure they can produce disaggregated moderation metrics and exposure data the regulator may request, and review their Ofcom fee/fine exposure given the pending separate ruling.