The UK government is considering extending its under-16 social media ban to second-hand marketplaces such as Vinted and eBay. On 8 November 2026, Culture Secretary Lisa Nandy told the BBC's Sunday with Laura Kuenssberg that ministers are "looking seriously at doing so in order to keep children safe." Depop and Facebook Marketplace have also been reported as under consideration.
The headline is about bans, but the more useful story is the reason behind it. Ministers are not worried about buying and selling. They are worried about the message box: the feature that lets a stranger contact a child directly. That distinction matters for parents, for regulators and for every platform with a chat function. Harm to children online is shaped less by what a platform is for than by what it lets people do.
What is the UK under-16 social media ban?
The government announced in June 2026 that under-16s will be barred from the largest social media platforms, following a model similar to Australia's. According to the government's fact sheet, the changes are expected to take effect in spring 2027, with the first regulations laid before the end of this year.
The key points so far: • Who is covered: platforms such as Instagram, TikTok, Snapchat, YouTube, Facebook and X. Private messaging services such as WhatsApp are excluded, as are dedicated educational platforms. • Beyond the ban: livestreaming and contact from strangers will be restricted for under-16s on other services, including gaming. For 16 and 17-year-olds, those features will be off by default. • Age checks: in October, Ofcom named four methods platforms can use to confirm a user is over 16: photo ID matching, bank checks, digital ID services and facial age estimation backed by a second method. • Marketplaces: in June the government said e-commerce was not in scope. Including
Vinted and eBay would be a significant change of direction. No final list of platforms has been published. Both eBay and Vinted already require users to be 18. eBay has said the details of the proposal are not yet clear and that it will work constructively with government. Vinted has not commented publicly.
Why are Vinted and eBay being considered?
According to reporting in the Sunday Times, the concern is that messaging features on resale platforms allow strangers to contact and groom children. That is the right instinct, and it reflects what criminological research has long shown: offenders go where children are, and they use whatever channel gives them private, direct access.
On a social network, that channel is a DM. In a game, it is in-game chat. On a resale marketplace, it is the buyer and seller inbox. The setting changes. The route does not.
An 18+ rule in the terms of service does not, on its own, keep younger users out. Ofcom has already judged self-declaration and contract terms to be ineffective forms of age assurance. A teenager selling clothes they have outgrown can do so through a parent's account or with a false date of birth, and each listing can open a private conversation with an adult they have never met.
This is why a list of banned platforms will always be incomplete. Each addition responds to harm that has already moved somewhere new. First social media, then gaming chat, now marketplaces. The common thread is not the category of platform. It is the feature.
How does grooming happen on resale platforms?
Grooming is rarely a single message. It is a sequence, and on a marketplace each step can pass as ordinary trade.
An illustrative pattern looks like this:
- Rapport. A friendly buyer compliments the seller's style or the items listed.
- Moving off-platform. "Easier to chat on WhatsApp or Snapchat?" This takes the conversation away from any moderation.
- Testing boundaries. Questions about age, school or whether a parent manages the account.
- Personal requests. A request for a photo "of the item being worn", framed as checking fit.
- Secrecy and leverage. Offers of extra money, gifts or a better price, followed by pressure to keep things private.
No single message in that list would trigger a keyword filter. Read in isolation, most of them would pass human review too. The risk lies in the trajectory: the move to a private channel, the interest in age, the shift from item to person. This is the core problem with treating child safety as a content moderation task. Moderation looks at messages. Grooming is a behaviour that unfolds across them.
Will age checks keep children off marketplaces?
Age assurance is an important part of the answer, but it is not a complete one. Ofcom itself expects some children to get round the new checks, and Australia's experience suggests young people adapt quickly.
Age checks also leave three gaps: • They act once, at the door. A verified account can still be shared, borrowed or used by someone else. • They say nothing about intent. A verified adult can still be the risk, and an age check cannot tell a platform how that adult is behaving. • They do not travel. Once a conversation moves off-platform, the original platform's checks no longer apply. Spotting the request to move is often the last chance to intervene.
In short, age checks decide who is allowed in. They do not show what happens once people are there.
What should online marketplaces do now?
Whether or not resale platforms end up in the ban, any service where strangers can message each other will be asked how it knows children are safe there. "Our terms say 18+" is unlikely to satisfy a regulator, a journalist or a parent.
Five practical steps:
- Map your contact surfaces. List every place one user can reach another: buyer and seller messages, offers, reviews, profile bios and listing comments.
- Treat requests to move off-platform as a signal. It is one of the clearest early indicators of risk, and the last point at which you can see the conversation.
- Analyse conversations, not just messages. Look for patterns that build over time: interest in age, requests for personal images, offers of money or gifts, secrecy.
- Build evidence as you go. Regulators increasingly expect platforms to show what they detected, when and what they did. Audit trails should be part of the design, not an afterthought.
- Protect privacy while you protect children. Detection does not have to mean retaining or exposing users' private messages. Choose tools built on data minimisation from the start.
Frequently asked questions
Are Vinted and eBay included in the UK under-16 social media ban? Not yet. On 8 November 2026 the Culture Secretary said the government is "looking seriously" at including them. No final list of platforms has been published.
When does the under-16 social media ban start?
The changes are expected in spring 2027. The first regulations are due to be laid before the end of 2026.
Can under-16s use Vinted or eBay now?
Both platforms already require users to be 18 or over. In practice, terms of service alone do not verify age, which is part of the government's concern.
Why are resale marketplaces a grooming risk?
Because their messaging features let strangers contact users directly and privately. Grooming often starts with ordinary-looking conversation and moves off-platform before it escalates.
How will age be checked under the ban?
Ofcom has named four methods: photo ID matching, bank checks, digital ID services and facial age estimation backed by a second method.
What can platforms do beyond age checks?
They can detect risky behaviour as it develops within conversations, such as attempts to move a child off-platform, requests for images or offers of money, and act before harm occurs.
Safety that follows the risk, not the platform list
The government is right to focus on stranger contact. But a ban list will always be catching up with where harm has already moved. What protects children wherever they end up is the ability to see risk forming inside a conversation, on any platform with a message box, before it escalates.
That is what Tuteliq was built to do. Developed by criminologists and engineers, Tuteliq is a single API that detects grooming and 12 other online harms across text, voice, image and video, in 32 languages, with zero data retention. It gives trust and safety teams the early signal and the audit trail they need, without building the capability themselves.
If you run a marketplace, a gaming platform or any service where strangers can message each other, we would welcome a conversation about what this looks like for your platform. Get in touch with the Tuteliq team.
Sources
• Government 'looking seriously' at banning under-16s from Vinted and eBay • UK may add Vinted and eBay to its under-16 social media ban (The Next Web) • The Independent: coverage of Lisa Nandy's comments on Vinted and eBay • GOV.UK: Fact sheet, new rules to protect children online • Ofcom names four age checks for the UK's under-16 social media ban (The Next Web)