TikTok, Instagram, and other social media platforms expect age verification measures in the UK's Online Safety Bill to reduce user numbers, hitting ad revenue
UK's Online Safety Bill requires stronger age verification measures for platforms including TikTok, Instagram and Snapchat
Context & Ripple Effects
The age-verification fight has been building for years: back in 2021, Ofcom put TikTok, Snapchat and OnlyFans on notice to verify ages or face fines, and the Online Safety Bill then widened the mandate from harmful-content removal to identity tools and filtering of 'legal but harmful' material. The porn-site clause shows how contested this territory is — an earlier version was quietly dropped in 2019 after criticism before being revived in the Bill.
What is new here is the platforms themselves quantifying the cost: TikTok, Instagram and Snapchat expect the verification requirements to shrink their user bases and, with them, ad revenue. The trajectory since has only hardened — regulators have since demanded 'highly effective age checks' for under-13 accounts and moved toward a broader ban covering livestreaming by children.
First-order effects
- TikTok, Instagram and Snapchat face an immediate trade-off between enforcing checks that remove users — and the ad impressions attached to them — and risking fines under the Bill's enforcement regime.
- Advertisers buying UK inventory on these platforms see audience counts fall as underage and unverified accounts are purged, repricing reach on the affected apps.
Second-order effects
- Because the rules bind all covered platforms equally, no rival gains a compliance arbitrage — competition shifts to who can verify with the least user friction rather than who can skip the checks.
- Identity-verification vendors become a critical supplier layer for social platforms, mirroring the demand already created by the adult-site mandate.
Third-order effects
- If enforcement escalates as the coverage suggests — from verification to blocking under-18 features to a full ban on children's accounts — the UK is normalizing state-mandated access control as the default design constraint for consumer internet services.
- Platforms may respond by geographically segmenting their product, running stricter, feature-reduced versions in regulated markets like the UK while keeping looser defaults elsewhere.
The trend: Age assurance is moving from a per-site obligation to universal infrastructure, with the UK's escalating sequence — warnings, verification mandates, feature blocks, bans — setting the regulatory template other jurisdictions are watching.