A child lies about their age online, signs up for a video app, and within minutes is scrolling through adult content or being contacted by strangers. This scenario is what UK regulators are trying to stop – and it's why TikTok now faces a formal investigation by Ofcom, the media watchdog, over its methods for checking how old its users are.
Ofcom launched the probe into TikTok in July 2026, examining whether the platform is doing enough to keep children off its service and to prevent under-18s from seeing harmful material. The investigation focuses on TikTok's use of "age inference" technology – software that estimates a user's age based on their behaviour on the app, such as the videos they watch or the people they interact with. Ofcom has "serious doubts" about whether such tools meet the legal requirement to be "highly effective", according to Kate Davies, Ofcom's group director for strategy and research. TikTok says it is "confident" it meets its obligations under the Online Safety Act and will work with Ofcom to demonstrate this.
“Why Ofcom is investigating TikTok's age checks, what the UK's Online Safety Act requires, and what it means for users.”
The investigation follows a broader crackdown by the UK government. In June 2026, the government announced that under-16s would be banned entirely from a range of platforms. This is part of the Online Safety Act (OSA), which came into force in stages. The OSA's protection of children codes, which took effect on 25 July 2025, require sites that host pornography or other harmful adult content to use methods such as face scans to check that a UK visitor is over 18. Ofcom has already issued large fines against dozens of adult sites for non-compliance.
At the heart of the issue is the challenge of verifying age online. Ofcom has previously criticised social media platforms for not being "safe enough" for children. In a separate report on age verification effectiveness, Ofcom found that, as of June 2026, 64 out of the top 100 most popular pornography services in the UK had deployed some form of age assurance, and a further 10 had geo-blocked UK visitors. But among the small minority of children who try to access pornography, half of them only encountered sites that had age checks in place. A key loophole is search engines: Ofcom noted that people are using search engines to find porn sites that lack age verification. On Google, 33% of first-page results for such searches lead to sites without age checks; on Bing, that figure rises to 54%.
For UK readers, this investigation matters because it directly affects how millions of people – especially teenagers – use social media. If Ofcom forces TikTok to change its age-checking methods, it could mean stricter sign-up processes, such as requiring government ID or facial age estimation, for all users. It also signals that the government is serious about enforcing the Online Safety Act, which aims to make the UK the safest place in the world to be online. Parents, in particular, may see platforms become more proactive in removing children from adult spaces.
Q: What is Ofcom investigating TikTok for? Ofcom is investigating whether TikTok's age-checking systems are "highly effective" enough to prevent children from accessing the platform and seeing harmful content. The probe focuses on a technology called "age inference", which guesses a user's age based on their activity on the app. Ofcom has serious doubts about its reliability.
Q: Why is the UK tightening age verification online? The UK's Online Safety Act requires platforms that host adult content to use robust methods – like face scans or ID checks – to verify a user is over 18. The law came into effect in stages, with children's protection codes taking force in July 2025. Ofcom is enforcing these rules because many sites failed to act voluntarily, and children were still able to access harmful material.
Q: How will this affect TikTok users in the UK? If Ofcom rules against TikTok, the platform may have to introduce more rigorous age checks, such as uploading a passport or using facial age estimation software. Under-16s could also be banned from the platform altogether, following the government's June 2026 announcement. Users may notice stricter sign-up processes and more prompts to verify their age.
What happens next depends on Ofcom's investigation. The regulator will gather evidence and decide whether TikTok has breached the Online Safety Act. If found in breach, TikTok could face a fine or be required to change its systems. Ofcom has already taken action against dozens of adult sites, showing it is willing to use its enforcement powers. TikTok has said it is confident it complies with the law, but the outcome will set a precedent for how all social media platforms handle age checks in the UK.