Ofcom opens a child-safety probe into TikTok — what it means for advertisers
- 5 days ago
- 4 min read
Updated: 3 hours ago
Ofcom has opened an investigation into whether TikTok's age checks do enough to keep children away from harmful content under the UK's Online Safety Act — a probe carrying fines of up to £18m or 10% of global turnover, and a signal that platform accountability is now a brand-safety issue advertisers must track.
UK regulator Ofcom has launched an investigation into TikTok over its age-assurance systems under the Online Safety Act. Announced on 16 July 2026, the probe examines whether TikTok uses proportionate systems to prevent children accessing content deemed harmful, after concerns its age-estimation models "may have failed to identify a significant proportion of children correctly." An update is expected around October 2026, with the investigation set to run at least three months, according to reporting from dig.watch, The Record and others.
The stakes are substantial. Under the Online Safety Act, Ofcom can impose fines of up to £18 million or 10% of qualifying worldwide revenue, whichever is greater. In the most serious cases, the regulator can seek court orders requiring payment providers, advertisers and internet service providers to withdraw services from a platform or block UK access. The rules requiring platforms likely to be accessed by children to protect them took full effect in July 2025.
Why platform regulation is now an advertiser issue
It is tempting for marketers to file this under "platform problem, not mine." That would be a mistake. The clause allowing Ofcom to require advertisers to withdraw services from a non-compliant platform explicitly pulls brands into the enforcement chain. And more broadly, the regulatory health of a platform is inseparable from its brand-safety profile: advertising sits directly against the content a regulator is scrutinising, and a probe about children accessing harmful material is exactly the kind of environment brands do not want to fund unknowingly.
This is part of a wider shift. The Online Safety Act, alongside the DMCC Act and tighter advertising rules, is steadily raising the compliance and reputational bar for operating in the UK's digital economy. Platforms are being held accountable for the environments they create, and the brands that spend on those platforms increasingly share in the reputational upside or downside of how well that accountability is met.
Marketing Minute's read: what UK brands should do
None of this is a reason to abandon TikTok, which remains a hugely effective platform for reaching younger audiences and driving cultural relevance. An investigation is not a verdict, and TikTok has defended its age-assurance measures. But it is a prompt to make brand safety an active, ongoing discipline rather than a box ticked once at media-plan sign-off. Regulatory scrutiny of a platform is a live input into where and how you advertise.
Practically, that means three things. Keep using the platform's brand-safety and content-adjacency controls, and review them regularly rather than setting and forgetting. Diversify so that no single platform carries so much of your budget that a sudden regulatory event would derail your marketing. And build a simple internal process to monitor major regulatory developments across the platforms you fund, so a story like this reaches your media decisions rather than passing you by.
There is a strategic upside for brands that take this seriously. As consumers, parents and regulators pay more attention to online safety, being demonstrably thoughtful about where your advertising appears is becoming a genuine trust signal. The brands that can show they advertise responsibly — with real controls and real oversight — will be better placed than those who find out where their ads ran only when something goes wrong.
Quick FAQ
What is Ofcom investigating about TikTok?
Whether TikTok's age-assurance systems are proportionate and effective at preventing children from accessing harmful content under the UK's Online Safety Act, following concerns its age-estimation models may have failed to correctly identify many child users. The probe was announced on 16 July 2026.
What penalties could TikTok face?
Under the Online Safety Act, Ofcom can fine platforms up to £18 million or 10% of global qualifying revenue, whichever is greater, and in severe cases seek court orders involving advertisers, payment providers and ISPs to restrict a platform's UK operation.
Should advertisers stop using TikTok?
Not on the basis of an investigation, which is not a verdict. But brands should treat platform regulation as a live brand-safety input: use and review content-adjacency controls, diversify budgets so no one platform is critical, and monitor regulatory developments across the platforms they fund.
Marketers love to treat platform regulation as someone else's problem, right up until their ads are running next to the exact content a regulator is investigating. Brand safety isn't a box you tick at sign-off — it's an ongoing discipline. Watch the platforms you fund as closely as you watch your own campaigns.
— Daniel Nikolla, Founder of Merx Marketing
Platform regulation is now a brand-safety issue: monitor it actively, keep your adjacency controls current, and never let one platform carry so much budget that a regulatory shock could derail you.
Does your media planning factor in the regulatory health of the platforms you buy, or is brand safety still a one-time check? We would love to hear how you handle it.
If you would like to know more about this topic, please contact us on danieln@merxmarketing.co.uk
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Written by Daniel Nikolla, Founder of Merx Marketing Ltd and Marketing Minute
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