As ministers consider bringing online marketplaces into the proposed social media ban, eBay, Vinted and Depop face a question that cuts to the heart of social commerce: where does shopping end and social networking begin?

Follow a seller, scroll through a personalised feed, message about a jacket and make an offer. On peer-to-peer marketplaces, shopping and social interaction are often part of the same journey.

That overlap could become a regulatory headache for the resale sector as the UK government considers whether its proposed ban on social media for under-16s should extend to online marketplaces.

For eBay, Vinted and Depop, the stakes go beyond losing access to younger shoppers. Restrictions could affect how buyers discover products, how sellers build a following and how the two sides communicate before a sale.

Yet their inclusion is not confirmed. The central question is whether ministers will regulate platforms according to their primary purpose — buying and selling — or the risks created by the social features built around transactions.

Why marketplaces are in the frame

The prospect moved beyond a theoretical debate on 8 November, when Culture Secretary Lisa Nandy said the government was seriously considering extending the proposed ban to online marketplaces.

Speaking on the BBC’s Sunday with Laura Kuenssberg, Nandy said ministers were examining the move as part of efforts to protect children from online harm.

The concern is not simply what children can buy. It is who can contact them while they browse and trade.

The Children’s Society has warned that some young people are being approached through resale platforms and asked for indecent photographs in exchange for money or gifts.

These services also have a young audience. Ofcom research found that 19 per cent of children aged eight to 14 use eBay at least monthly, while 15 per cent use Vinted.

That puts marketplaces at the intersection of two competing considerations: protecting children from harmful contact and preserving access to services whose main function is commerce rather than social networking.

When a shop becomes a social network

On paper, the distinction looks straightforward. eBay, Vinted and Depop connect people who want to buy and sell goods. But profiles, private messages, following, recommendations and personalised feeds make the experience more social than a conventional online checkout.

Depop illustrates the blurred boundary particularly clearly. Its social-commerce model lets users follow sellers, discover products through feeds and interact with other members. The community and the shop are closely connected.

This creates a difficult choice for policymakers. Treat every marketplace with social functions as a social network and the restrictions could reach well beyond their original target. Focus only on a platform’s commercial purpose and the risks associated with private contact could remain.

More than a loss of young shoppers

If marketplaces fall within a blanket ban, the most immediate consequence would be the exclusion of under-16 users. For resale businesses, however, those users can sit on both sides of the transaction.

A younger participant may be buying affordable second-hand clothing one day and selling unwanted items the next. Removing that access could therefore affect both demand and the supply of goods, rather than simply reducing a platform’s audience.

The implications would vary. Depop’s fashion-led community makes its appeal to younger consumers particularly relevant. Vinted could face disruption to younger users’ clothing resale activity, while eBay’s exposure would span a broader range of product categories.

The wider question for second-hand retail is whether restrictions would narrow young people’s opportunities to earn money from unwanted possessions and take part in circular shopping. The size of any commercial impact would depend on the final rules and the users they cover.

Keeping under-16s off affected services would also raise a practical challenge: establishing who is old enough to use them.

More robust age verification could introduce additional compliance costs and extra steps at registration. Marketplaces face a potential tension between demonstrating effective safeguards and keeping the buying and selling journey straightforward.

Ofcom has identified photo ID matching, digital ID, banking checks and facial age estimation as methods capable of providing highly effective age assurance at 16. Which approach affected marketplaces might adopt, and how it would fit into their services, remains an open question.

Could messaging be the dividing line?

An alternative to excluding younger users entirely would be to target the features that expose them to harmful contact.

That could mean tighter restrictions on communication between strangers. But messaging is not merely a social extra on a resale platform: it allows buyers to ask about an item’s condition, negotiate a price or arrange a collection.

Restricting those exchanges could leave younger users able to browse while limiting their ability to complete the interactions that support a purchase. The challenge would be to separate necessary trading conversations from unsafe contact without undermining the marketplace itself.

A defining test for social commerce

The government has said the first regulations for its proposed under-16 social media ban will be laid before Parliament by the end of 2026, with initial restrictions expected in spring 2027. Whether eBay, Vinted and Depop will be included remains unresolved.

A platform-wide age restriction could affect customer acquisition, transactions and stock coming onto services. Feature-specific safeguards could leave younger users able to participate, but change how they discover sellers and communicate with them.

The debate exposes a tension at the centre of social commerce. Features that make online shopping feel personal and community-driven can also create channels for harmful contact.

The question is no longer simply whether they are shops or social networks. It is whether the rules can address the risks of being both without removing the interactions that help them function.

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