UK Online Safety Act Scope, Duties, and Implementation

This hub is built around the live implementation sequence for the UK Online Safety Act. It covers service scope, illegal content duties, child access and child risk assessments, age assurance, moderation and complaints design, categorised service duties, and Ofcom enforcement exposure.

Use the root timeline and guide first. Then use the subpages to work from the real implementation milestones: the Act passed on 26 October 2023, criminal offences took effect on 31 January 2024, illegal harms codes were approved on 16 December 2024, section 81 took effect on 17 January 2025, and services likely to be accessed by children had until 24 July 2025 to complete their children's risk assessment.