Age Verification and Online Safety Act: What Platforms Must Do Now

More than 60% of children in the UK aged 8 to 17 have encountered harmful content online, according to Ofcom’s 2025 Online Safety Report. That figure alone explains why age verification and online safety are no longer optional considerations for digital platforms. They are legal obligations with real consequences for non-compliance.

The Online Safety Act 2025 has fundamentally changed the compliance landscape for websites, apps, social media platforms, and any service that allows user-generated content. Whether you run a gaming site, a marketplace, an adult content platform, or a social network, the rules now require you to take age verification and online safety seriously.

In this guide, you will learn what the Online Safety Act actually requires, which platforms are in scope, what age verification systems are legally acceptable, how to build compliant safety systems, and what penalties apply if your platform falls short.

What Is the Online Safety Act and Why Does Age Verification Matter?

The Online Safety Act 2023 is the UK’s primary legislation governing digital platform safety, placing a legal duty on platforms to protect users from illegal and harmful content. Age verification and online safety are at the heart of this framework, requiring platforms to verify users’ identities and prevent children from accessing inappropriate material.

Ofcom is the independent regulator appointed to oversee the Act’s implementation. The Act created a tiered system of duties depending on the type of service a platform provides. At its core, it recognizes that age assurance is not just a technical exercise but a fundamental component of platform governance.

The Legal Framework Behind Age Verification and Online Safety

The Online Safety Act 2023 received Royal Assent in October 2023. It builds on years of policy development, including the Age Appropriate Design Code (Children’s Code) introduced by the Information Commissioner’s Office (ICO) in 2020. Together, these instruments create a comprehensive compliance framework that treats age verification and online safety as interconnected obligations.

Under the Act, platforms must carry out a Children’s Risk Assessment to determine whether children are likely to access their service. If that assessment concludes that children are or may be present, the platform must implement robust age verification systems to prevent access to harmful content. The duty is not passive: platforms cannot simply post a terms-of-service clause stating the site is for adults and consider themselves compliant.

The Act also requires platforms to publish their safety policies, implement content moderation requirements, and maintain transparency reporting.

What the Online Safety Act Means for Age Assurance

Age assurance is the umbrella term covering all technical and procedural methods used to determine or estimate a user’s age. The Online Safety Act mandates that age assurance must be robust enough to prevent a significant number of children from accessing services they should not use.

Ofcom has defined robustness to mean that age verification systems must be technically reliable, hard to circumvent, and privacy-respecting. Self-declaration, such as a user entering a date of birth, does not meet this standard on its own. Platforms need to implement layered or verified methods.

A highly effective age assurance methods include photo identification checks, facial age estimation, mobile network operator checks, credit card verification, and digital identity verification services.

Which Platforms Must Comply with Age Verification and Online Safety Rules?

The Online Safety Act applies to a wide range of digital services operating in the UK or with UK users. Understanding whether your platform is in scope is the first step toward building a compliant age-verification and online-safety framework.

The Act distinguishes between user-to-user services, search services, and pornographic content services. Each category has specific online age-verification obligations and safety-system requirements.

User-to-User Services

User-to-user services are platforms where users can create, upload, or share content for others to see. This category includes social media platforms, forums, gaming platforms, messaging apps, video-sharing services, and online marketplaces with review or listing functions.

These platforms must conduct risk assessments, implement online safety regulations that protect children and vulnerable adults, and ensure that content moderation requirements are met. The level of obligation scales with the platform’s likely risk to users.

Pornographic Content Services

Online platforms that publish or host pornographic material face the strictest age verification obligations under the Online Safety Act. These platforms must implement robust online age verification systems that meet Ofcom’s technical standards, rather than relying on self-declaration or checkbox confirmations.

This category of online platform safety standards has attracted the most attention, particularly following the earlier failure of the Digital Economy Act 2017 to implement age controls in this sector. The Online Safety Act adopts a stronger enforcement approach with direct oversight by Ofcom.

Category 1 and Category 2 Services

The Act creates two tiers of regulated platforms. Category 1 services are the largest platforms with the highest reach, such as major social media networks. These face the most extensive transparency and safety obligations. Category 2A and 2B services are smaller but still subject to base-level duties.

Platforms in Category 1 must meet additional online platform safety standards, including transparency reporting, user empowerment features, and enhanced risk assessment processes. Ofcom publishes and updates the list of services falling within each category.

Platform Type	In Scope?	Primary Obligation
Social media platforms	Yes	Risk assessment, age assurance, and moderation
Pornographic content sites	Yes	Robust online age verification systems mandatory
Online gaming platforms	Yes	Children’s Risk Assessment and age controls
Marketplaces with UGC	Yes	Content moderation requirements
Email services (private)	Limited	Only if public-facing UGC is present
Internal business tools	No	Exempt if no public-facing user content
News publishers	Partial	Exempt core news but not comment sections

Legal Age Verification Methods That Meet the Online Safety Act Standard

Not all age verification methods are equal under the law. Ofcom’s guidance on age verification and online safety specifies that platforms must use technically robust online age verification systems. This section explains which methods are considered acceptable and how they compare.

Understanding the distinction between weak self-declaration tools and verified age assurance systems is essential for any compliance professional or platform operator.

Highly Effective Age Verification Methods

Ofcom’s 2024 guidance identifies several online identity verification methods as highly effective when applied correctly. These include:

•  Photo ID verification: Users submit a government-issued ID such as a passport or driving licence. AI-powered document verification tools check authenticity in real time. This method is widely used in regulated financial services and provides strong age assurance.
• Facial age estimation: AI analyses a user’s facial features to estimate their age without storing biometric data. Ofcom acknowledges this as a privacy-respecting option when implemented accurately.
• Credit card verification: Requires a valid debit or credit card, typically accessible only to adults. This is a secondary signal rather than a standalone solution because some children access their parents’ cards.
•  Mobile network operator checks: The user’s mobile provider confirms age details using account registration data, without sharing any data with the platform.
•  Digital identity wallets: Emerging solutions that allow users to share verified age claims from trusted government or private identity schemes without revealing other personal data.

Jumio.site has covered the role of biometric checks in age assurance in depth, particularly through its analysis of next-generation age verification technology and its application to platform compliance.

Methods That Do Not Satisfy Online Safety Act Requirements

The following approaches are explicitly insufficient as standalone age verification methods under Ofcom’s online safety regulations:

• Self-declaration of date of birth: Entering a birthdate provides no verification. Children routinely bypass such controls.
• Checkbox confirmation: Clicking ‘I confirm I am over 18’ is not an online age verification process by any technical standard.
• Account registration with email only: An email address provides no age signal and can be created by anyone, regardless of age.

Platforms that rely solely on these methods will not satisfy online safety regulations and risk enforcement action by Ofcom.

Balancing Age Verification with Data Privacy Protection

A core tension in online age verification is between effective user age verification processes and data privacy protection. Platforms must not collect more personal data than is necessary to verify age, and they must comply with the UK GDPR and the Data Protection Act 2018.

Privacy-preserving approaches, such as zero-knowledge proofs and anonymised age tokens, allow platforms to obtain a verified confirmation that a user is above a specified age threshold without collecting or storing any personal data.

Ofcom has signalled support for these approaches as they balance online child protection with individual privacy rights.

How to Build an Age Verification and Online Safety Compliance Framework

Building a compliance framework for age verification and online safety requires more than installing a single technical tool. It involves a structured process that covers risk assessment, system selection, implementation, and ongoing review. Platforms that treat this as a one-time exercise rather than a continuous program will struggle to stay compliant as Ofcom updates its codes of practice.

Step 1: Conduct a Children’s Risk Assessment

The user age verification process begins with a formal Children’s Risk Assessment. This document must identify: whether children are likely to access your service, what types of harmful content or contact they may encounter, and how the platform’s features could create or amplify risk.

Ofcom provides a risk assessment template as part of its codes of practice. The assessment must be kept up to date and revised whenever significant changes are made to the platform.

Step 2: Select and Implement an Age Verification System

Based on the risk assessment outcome, select an online age verification system appropriate to your platform’s risk level. Higher-risk platforms, such as those hosting age-restricted content, require more robust verification than general social networks.

When evaluating age verification and online safety vendors, consider: technical accuracy rates, false positive and false negative rates, privacy certifications, compliance with the UK GDPR, the user experience impact during onboarding, and integration options with your existing platform infrastructure.

Step 3: Implement Content Moderation Requirements

Age verification stops underage users from accessing the platform but does not address the content that verified adult users may encounter. Platforms must also implement content moderation requirements that classify, filter, and in some cases remove harmful or illegal content.

The Act requires platforms to take proactive steps against illegal content and to provide users with controls over what content they see. Content filtering systems should be trained on the platform’s specific content types and updated regularly.

Step 4: Publish Safety Policies and Maintain Transparency

The Online Safety Act requires platforms to publish clear, accessible safety policies that explain how age verification and online safety are managed. These documents must explain what age-restricted content rules apply, how the platform enforces them, and what users can do if they encounter harmful material.

Transparency reports must be published annually by Category 1 platforms and include data on content removal, appeals, and enforcement actions.

Compliance Step	Action Required	Timeline
Children’s Risk Assessment	Identify the likelihood of child users and risk vectors	Before launch or within 3 months of the Act applying
Age Verification System	Implement a technically robust online age verification	Before providing access to age-restricted content
Content Moderation	Deploy content filtering systems and a human review process	Ongoing
Safety Policies	Publish accessible terms covering age-restricted content rules	Before service goes live
Transparency Report	Annual report on enforcement, removal, and user appeals	Annually (Category 1 only)
Data Privacy Review	Ensure data privacy protection compliance with UK GDPR	Ongoing

Age Verification for Specific Platform Types: A Practical Breakdown

The practical application of age verification and online safety rules varies significantly by platform type. This section examines how the compliance framework applies to the most common platform categories, drawing on Ofcom guidance and industry practice.

Social Media Platforms and Social Media Safety Rules

Social media safety rules under the Online Safety Act require platforms to implement a children’s risk assessment, restrict harmful content from reaching younger users, and provide age verification mechanisms where children are likely to be present.

Major platforms such as Instagram, TikTok, and Snapchat have already begun deploying age estimation tools and AI-powered moderation. However, smaller social platforms with UK users are equally subject to social media safety rules and cannot claim exemption based on size alone.

The Act requires all user-to-user services to implement social media safety rules covering exposure to illegal content, harmful content for children, and content that is legal but harmful for adults. Digital platform compliance in this category includes enabling users to filter content and report harmful material.

Online Gaming Platforms

Online gaming platforms have specific age-verification obligations because games are rated under the PEGI system, and certain titles are restricted to players aged 18 and over. Under online safety regulations, gaming platforms that allow user interaction must implement both age verification and safety systems.

Many gaming platforms have implemented purchase-based age signals (such as credit card or PayPal verification) alongside account registration controls. However, Ofcom’s guidance suggests that platforms hosting 18-rated content or enabling real-money gambling mechanics must implement verified online age-verification systems rather than relying solely on payment signals.

Online Marketplaces and Age-Restricted Products

Digital marketplaces selling age-restricted products such as alcohol, tobacco, vaping products, or knives face overlapping obligations from the Online Safety Act and existing trading standards legislation. The user age verification process for these platforms must confirm that purchasers are of legal age before completing a transaction.

For online marketplaces hosting third-party sellers, the platform itself bears responsibility for ensuring sellers comply with age-restricted content rules. Marketplace operators cannot transfer their legal obligation to individual sellers.

Adult Content Platforms

Adult content platforms face the most stringent age-verification and online-safety obligations within the regulatory framework. Ofcom’s published guidance requires these platforms to implement online age verification systems capable of reliably excluding underage users.

Methods accepted for this category include photo ID verification, facial age estimation, and mobile network operator confirmation. Platforms that do not implement these controls before Ofcom’s enforcement deadlines face the largest potential penalties under the Act.

Penalties and Enforcement: What Happens If You Do Not Comply?

Understanding the penalty framework is essential for any compliance professional assessing the business case for investing in age-verification and online-safety systems. The Online Safety Act gives Ofcom significant enforcement powers that go well beyond those available under previous internet legislation.

Financial Penalties for Non-Compliance

Ofcom can issue fines of up to 10% of a company’s global annual turnover or 18 million pounds, whichever is higher, for the most serious breaches of online safety regulations. For major platforms with billions in revenue, this represents an exposure of hundreds of millions of pounds.

Smaller platforms face proportionate fines calibrated to their scale, but the reputational and operational impact of an Ofcom investigation is significant regardless of company size.

Senior Manager Liability

One of the most significant enforcement innovations in the Online Safety Act is the introduction of personal liability for senior managers. Where a platform repeatedly or seriously fails its age verification and online safety obligations, Ofcom can seek criminal prosecution of named executives.

This provision is designed to ensure that age verification and online safety are treated as board-level priorities rather than delegated entirely to technical teams. Risk mitigation strategies must therefore include governance structures that give senior management visibility of compliance status.

Service Restriction Orders

In the most serious cases of non-compliance with online safety regulations, Ofcom can apply to court for a Service Restriction Order. This legal mechanism can require internet service providers and app store operators to block or remove a platform from UK users entirely.

Apple and Google have indicated they will comply with Ofcom-approved Service Restriction Orders, meaning non-compliant apps could be removed from UK app stores.

The Future of Age Verification and Online Safety Regulation

The Online Safety Act marks the beginning of a longer regulatory journey rather than a final destination. Age verification and online safety requirements are expected to evolve significantly over the next three to five years as technology, user behaviour, and political priorities shift.

Interoperable Digital Identity Verification

The UK government is developing a national digital identity framework that could enable interoperable digital identity verification across services. Under this model, a user could verify their age once with a trusted identity provider and reuse that verified claim across multiple platforms, reducing friction while maintaining security.

This approach aligns with the EU’s eIDAS 2.0 framework, which creates a legal basis for digital identity wallets across EU member states. UK platforms serving both UK and EU users will need to accommodate both frameworks.

AI-Powered Age Assurance at Scale

Facial age estimation technology is improving rapidly. Current systems can estimate age within a margin of plus or minus two to three years for the majority of users. As accuracy improves and costs fall, AI-based age assurance is expected to become the default verification method for high-volume consumer platforms where document verification creates too much onboarding friction.

Ofcom has committed to reviewing its technical guidance as new age assurance methods emerge, meaning the compliance framework for age verification and online safety will remain dynamic.

International Harmonisation of Online Safety Regulations

The UK is not alone in legislating for age verification and online safety. The EU’s Digital Services Act, Australia’s Online Safety Act, and various US state-level laws create a patchwork of international compliance obligations for global platforms.

Platforms operating across jurisdictions should design their age verification systems to meet the highest applicable standard, which currently means compliance with UK and EU requirements simultaneously. Internet regulation is converging, and platforms that invest in robust systems now will be better positioned as international requirements align.

Conclusion

Age verification and online safety are now central obligations for any digital platform operating in the UK. The Online Safety Act 2023 has ended the era of self-regulation, creating legally enforceable duties backed by some of the most powerful penalties ever applied to the internet sector.

For platform operators and compliance professionals, the message is clear. Conducting a Children’s Risk Assessment, implementing technically robust online age verification systems, deploying effective content moderation requirements, and publishing transparent safety policies are not aspirational goals. They are legal requirements with enforcement teeth.

Key Takeaways:

• Age verification and online safety are legal obligations under the Online Safety Act, not optional best practices. Every platform serving UK users must now assess its compliance position.
• Not all age verification methods are legally sufficient. Self-declaration, checkbox confirmations, and email registration do not meet Ofcom’s standard for robust online age verification systems.
• Penalties for non-compliance are severe, including fines of up to 10% of global turnover and potential criminal liability for senior managers. Risk mitigation strategies must include board-level governance of age verification and online safety.

Explore more compliance guides on age assurance, digital identity verification, and platform governance at jumio.site, where expert analysis of KYC, AML, and online safety regulations is published regularly for compliance professionals and platform operators.