A second major country has now decided that children under 16 should not hold social media accounts. On Monday 15 June 2026 the UK government announced it will bar under-16s from TikTok, Instagram, Snapchat, YouTube, Facebook and X, with the rules expected to take effect in spring 2027. The burden falls on the platforms, not on children or their families.
Nothing changes on your child’s phone today. What changed on Monday is that the Australia model, until now a one-off, has a second large market behind it.
What the ban actually covers
The line is drawn at accounts, not the whole internet. Under-16s will not be able to hold an account on the six named platforms. Messaging stays outside it: WhatsApp and Signal are named as exempt, along with YouTube Kids, on the logic that private messaging and supervised children’s services do a different job from the open, algorithmic feeds the ban targets. The full list has not been finalised, which leaves a real question over hybrid apps like Telegram that mix private messaging with public channels capable of carrying extreme content.
Enforcement is built to land on the companies. Starmer said he is prepared to confront platforms that resist, and that children and parents who get around the rules will not be punished, even though he expects some teenagers to try. The duty to check ages, and the penalties for failing, sit with the platforms.
Where it goes further than Australia
Two additions stand out. The UK says it will also stop strangers from contacting children on gaming and livestreaming platforms, reaching beyond the usual social apps to where many younger children spend their time. And rather than letting protections vanish the day a child turns 16, it will keep some safeguards on by default for 16 and 17-year-olds, avoiding a cliff-edge.
The same announcement set a minimum age of 18 for AI chatbot apps that offer romantic or companion-style relationships, a category earlier rules had missed. That one deserves its own post, and it will get one. More is coming in July, when the government will set out plans for overnight curfews and forced breaks in infinite-scroll feeds for under-18s.
How platforms will actually check ages
The hardest question is how a platform proves a user is 16. The UK is reaching for a standard it already applies to adult-content sites, called highly effective age assurance, and Ofcom has been asked to run a rapid study on what that should mean for the under-16 line. This does not have to mean uploading a passport. Facial age estimation, where a camera guesses your age from a selfie, is an accepted method and needs no ID at all.
The catch is accuracy. Face-scanning is only reliable to within about 18 months, which makes 16 a genuinely hard line to police: a 15-year-old and a 17-year-old look much the same to the software, so ID checks are likeliest to be demanded right at the boundary. That is also where the privacy worry sits, and rights groups point to a major breach of age-verification data last year as a warning about what happens once this information is collected at scale.
What this means for you right now
Platforms do not build age-checking systems one country at a time if they can help it, so when a market the size of the UK demands age assurance, the machinery tends to get switched on far more widely. In more and more countries, no accounts before 16 is becoming the legal default, and that is now the backdrop to whatever you decide at home.
The detail to watch is how ages get checked. If facial estimation becomes the norm, the friction stays low; if platforms fall back on ID, the cost rises for adults too. No platform has said yet which way it will go. We will keep the country tracker updated as this moves.
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