UK Online Safety Act.
The UK Online Safety Act imposes duties on online service providers to protect users from illegal content and, for larger platforms, content harmful to children. Ofcom enforces with powers to block non-compliant services.
Maximum penalty
10% global turnover
Source: Section 130
Key requirements
Illegal content risk assessment and mitigation
Child safety duties (Category 1 services)
Transparency reporting to Ofcom
Content moderation standards
+2 more requirements in the complete guide.
Get the full UK OSA compliance guide →Enforcement examples
Ofcom codes being finalized
Ofcom publishing codes of practice; enforcement powers active from 2025
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2025
How Tessera automates UK OSA compliance
Content risk assessment documentation
Child safety compliance monitoring
Ofcom transparency reporting
Age verification compliance tracking
UK OSA compliance checklist
Essential steps to achieve and maintain UK OSA compliance.
Conduct illegal content risk assessment
Implement child safety measures (if applicable)
Establish Ofcom transparency reporting
+2 more steps in the full checklist.
Get your complete UK OSA compliance checklist - free →Industries affected
Calculate your UK OSA exposure.
See exactly how UK OSA penalties apply to your revenue and industry profile.