EdLaw
Regulated services: definitions
The definitions that decide whether a service is regulated at all: "user-to-user service" and "search service" (section 3) and the meaning of "regulated service" via Part 2 (section 4).
Section 3 — “User-to-user service” and “search service”
Verbatim from legislation.gov.uk (consolidated text, valid as at 2026-06-29).
1 In this Act “user-to-user service” means an internet service by means of which content that is generated directly on the service by a user of the service, or uploaded to or shared on the service by a user of the service, may be encountered by another user, or other users, of the service.
- a it does not matter if content is actually shared with another user or users as long as a service has a functionality that allows such sharing;
- b it does not matter what proportion of content on a service is content described in that subsection.
4 In this Act “search service” means an internet service that is, or includes, a search engine (see section 229).
- a is of a kind described in subsection (1), and
- b includes a search engine, is a user-to-user service or a search service for the purposes of this Act.
6 It is a search service if the only content described in subsection (1) that is enabled by the service is content of any of the following kinds—
- a content mentioned in paragraph 1, 2 or 3 of Schedule 1 (emails, SMS and MMS messages, one-to-one live aural communications) and related identifying content;
- b content arising in connection with any of the activities described in paragraph 4(1) of Schedule 1 (comments etc on provider content);
- c content present on a part of the service in relation to which the conditions in paragraph 7(2) of Schedule 1 are met (internal business service conditions).
Section 4 — “Regulated service”, “Part 3 service” etc
Verbatim from legislation.gov.uk (consolidated text, valid as at 2026-06-29).
2 A user-to-user service is a “regulated user-to-user service”, and a search service is a “regulated search service”, if the service—
- a a regulated user-to-user service,
- b a regulated search service, or
- c an internet service, other than a regulated user-to-user service or a regulated search service, that is within section 80(2) (including a service of a kind described in Schedule 2).
5 For the purposes of subsection (2), a user-to-user service or a search service “has links with the United Kingdom” if—
- a the service has a significant number of United Kingdom users, or
- b United Kingdom users form one of the target markets for the service (or the only target market).
6 For the purposes of subsection (2), a user-to-user service or a search service also “has links with the United Kingdom” if—
- a the service is capable of being used in the United Kingdom by individuals, and
- b there are reasonable grounds to believe that there is a material risk of significant harm to individuals in the United Kingdom presented by—
7 A regulated user-to-user service that includes a public search engine is referred to in this Act as a “combined service”.
“Public search engine” means a search engine other than one in relation to which the conditions in paragraph 7(2) of Schedule 1 (internal business service conditions) are met.
- “search content” has the same meaning as in Part 3 (see section 57);
- “user-generated content” has the meaning given by section 55 (see subsections (3) and (4) of that section).
Sources
Meta
All provision text above is reproduced verbatim from the consolidated Online Safety Act 2023 on legislation.gov.uk, extracted mechanically from the official XML. Each provision carries its official identifier as a trailing attribute anchor, the same id legislation.gov.uk uses.