Artifact GuideUKCategorisation

UK Online Safety Act Categorisation

Categorisation decisions under the UK Online Safety Act should be written in operational language: who is in scope, what must happen, what evidence proves it, and when escalation is needed.

Use this guide to turn official requirements into scope, evidence, owner, and review decisions. This guidance is practical, source-linked, and should be validated against current legal and policy requirements before implementation.

Author
Sorena AI
Published
May 9, 2026
Updated
May 9, 2026
Questions
3

Structured answer sets in this page tree.

Primary sources
5

Cited legal and guidance references.

Publication metadata
Sorena AI
Published May 9, 2026
Updated May 9, 2026
Overview

This page helps you determine when UK Online Safety Act obligations apply, who owns each action, the required evidence, and the review path before escalation.

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3 of 3 questions
Question 1

How to scope, assign, and document Online Safety Act categorisation

Teams should treat Categorisation under the UK Online Safety Act as a source-linked operating decision: confirm whether the service is in scope and which illegal-content, children-safety, age-assurance, user-empowerment, transparency, complaints, risk-assessment, or Ofcom enforcement duty is triggered, assign the team that can change the process, and keep evidence showing the action and review trigger.

The safest first step is to classify the service, user-to-user/search functionality, child-access status, illegal-content risk, and Ofcom code mapping before assigning the Online Safety Act action.

  • Write the Categorisation decision in one sentence before drafting controls.
  • Attach the external source URL and a short source quote to the evidence record.
  • Route unclear cases to legal, privacy, security, or compliance review before launch.
Citations
Question 2

What evidence should teams keep for Categorisation under the UK Online Safety Act?

Useful evidence is not just a safety policy. Keep the source, service map, risk assessment, mitigation evidence, age-assurance rationale, terms/complaints records, and Ofcom-readiness trail together.

  • Source URL and quote used for the decision.
  • Scope notes, screenshots, data-flow or system references, and role mapping.
  • Implementation ticket, approval record, exception notes, and review date.
Question 3

Which mistakes create risk when handling Categorisation under the UK Online Safety Act?

The common failure pattern is treating online safety as generic moderation without checking service scope, child access, illegal content duties, code measures, age assurance, complaints, and transparency reporting.

  • Using an old threshold, deadline, source page, or contract template without checking current source text.
  • Treating a source-linked exception as a general exemption for every product or data flow.
  • Publishing notices, controls, or answers that do not match the actual product behavior.
Citations
Primary sources

References and citations

gov.uk
Referenced sections
  • UK Government explainer source for Online Safety Act scope, regulated services, and the categorised-service framework behind this FAQ.
"The Online Safety Act 2023 (the Act) is a new set of laws that protects children and adults online."
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