In February we wrote about the Information Commissioner’s Office (ICO) issuing fines under the UK GDPR to two social media companies. Reddit was fined £14.47 million and MediaLab (owner of Imgur) was fined £247,590 for failing to implement age‑assurance measures and for processing children’s personal data in a way that potentially exposed them to harmful content.
Safeguarding children’s privacy is a key enforcement priority for the ICO. The ICO’s investigation into TikTok (opened in March 2025) is still ongoing. It is considering how the platform uses personal data of 13-17 year-olds in the UK to make recommendations to them and deliver suggested content to their feeds. This is in the light of growing concerns about social media and video sharing platforms using data generated by children’s online activity in their recommender systems, which could lead to them being served inappropriate or harmful content. The ICO is also investigating 17 other platforms including Discord, Pinterest, and X, and has been in discussions with Meta and Snapchat over how they use children’s location data in their user map features.
Safeguarding children’s privacy is also a duty of the ICO under the Online Safety Act, alongside Ofcom. Last week the ICO published an open letter to social media and video‑sharing platforms operating in the UK, calling on them to strengthen age assurance measures so young children cannot access services that are not designed for them. The letter sets out the ICO’s expectations about measures that platforms with a minimum age must implement, beyond relying on children to self-declare their ages (which they can easily bypass). Instead, platforms should make use of the viable technology that is now readily available to enforce their own minimum ages and prevent these children from accessing their services. The ICO has also written directly to platforms, starting with TikTok, Snapchat, Facebook, Instagram, YouTube and X to ask them to demonstrate how their age assurance measures meet the ICO’s expectations.
The Data (Use and Access) Act 2025, most of which came in to force earlier this month, explicitly requires those who provide an online service that is likely to be used by children, to take their needs into account when deciding how to use their personal data.
Listen to the Guardians of Data Podcast for the latest news and views on data protection, cyber security, AI and freedom of information.
This and other developments relating to children’s data will be covered forthcoming workshop, Working with Children’s Data.
