What Could Stricter Social Media Regulations for Under-16s Mean for Marketers?

The regulation matters. Behaviour matters more.

The reasons behind these policies are well established: concerns around harmful content, mental health, digital wellbeing and platform accountability. The UK’s approach builds on existing frameworks such as the Online Safety Act, with further pressure on platforms to introduce age checks and safer design.

But from a marketing perspective, regulation is only the starting point.

Audiences don’t stop behaving digitally because access becomes harder, they adapt.

Some will remain on social platforms where possible. Others will shift towards spaces that sit outside the scope of regulation, from messaging apps like WhatsApp and Discord to gaming environments such as Roblox or Fortnite. Others may become more intentional in how they search for content, brands and recommendations.

That shift is what matters most. Marketing has never been about platforms; it’s about how people use them.

The real shift: youth behaviour may become less predictable

The more significant implication is not necessarily a loss of reach, but a loss of consistency.

Historically, younger audiences have behaved in broadly similar ways across markets. TikTok, Instagram and YouTube have dominated. Discovery has been largely feed-led, algorithm-driven and culturally shared.

That may start to change.

Australia’s restrictions already show how behaviour can fragment. Under-16s may be restricted from holding accounts on certain platforms, but they can still access content in other ways or shift their activity into adjacent spaces.

The UK’s proposed model is similar, but not identical and other countries are taking different approaches again.

The result is that behaviour won’t evolve uniformly.

A younger user in one market may still be deeply embedded in social feeds. In another, discovery may happen via messaging groups, creator-led communities or gaming environments. In others, behaviours may shift further towards search or passive content consumption without active participation.

For global brands, this creates a new challenge. The assumption that “Gen Z behaves like this” becomes less reliable when regulation starts shaping behaviour differently by market.

What was once a relatively transferable youth strategy may need to become far more local.

Discovery journeys could become more fragmented

This is where the impact becomes more practical.

Social media has been powerful because it compresses the journey. Discovery, influence, validation and action often happen in the same place, in the same moment.

If behaviour fragments, those stages may begin to separate again.

A user might discover a brand in one channel, validate it in another, perhaps via group chats or creator communities, and convert somewhere else entirely. Some of those touchpoints may become harder to track or even identify.

That changes how marketers think about effectiveness.

It’s no longer just about being present on the right platform. It’s about understanding how different environments contribute to the journey and how they connect.

It also puts more pressure on measurement. Marketers relying on simplified, platform-centric attribution models may find they no longer reflect how influence really happens.

AI-powered discovery is a signal worth watching

AI shouldn’t be overstated here, but it’s one example of how behaviour could shift.

Social feeds become less central in some markets or moments; more intentional discovery could increase. That includes traditional search, but also conversational tools such as ChatGPT or Gemini.

That changes the dynamic.

Social discovery is passive. It’s driven by exposure, trends, and cultural moments.

Search and AI-driven discovery are active. They start with a question, a need or a problem and reward content that is useful, clear, and authoritative.

This doesn’t mean AI replaces social. It won’t. But it does suggest that discovery behaviour may broaden, and marketers need to plan for that rather than optimising for a single dominant pathway.

What does this mean for channel strategy

For marketers, the challenge is not simply deciding which platform receives more budget. It is understanding how each channel fits into a changing customer journey.

If younger audience behaviour becomes more fragmented and more market-specific, channel strategy needs to reflect that.

That means:

• starting with how audiences behave, not where platforms sit
• recognising that discovery, trust and conversion may happen in different places
• being more cautious about applying the same approach across multiple markets
• balancing short-term performance with long-term visibility and understanding

In practical terms, this creates more pressure on strategy.

What was once a relatively predictable media environment becomes more fluid. The channels themselves haven’t necessarily changed – but how people use them has.

The brands that adapt will be the ones that stay closest to behaviour, not platforms.

Looking Beyond the Platform

The biggest risk here isn’t that marketers lose access to younger audiences.

It’s that they assume those audiences will continue behaving as they always have.

If regulation starts to influence how younger consumers discover information, spend time online and engage with brands, the real challenge becomes understanding what replaces those behaviours, and how that varies by market.

The brands that win won’t be the ones that stay closest to platforms, but the ones that stay closest to how behaviour evolves in real time.

That’s where a Growth Marketing approach becomes more important.

If you’re thinking about how your audience’s journeys might be changing, or where new growth opportunities could come from, we’re already helping clients map these shifts and identify where growth will come from next. Get in touch to explore what this could look like for your brand.