Part 4: Other duties of providers of regulated user-to-user services and regulated search services Chapter 2: Reporting Child Sexual Exploitation and Abuse Content Section 70: Interpretation of this Chapter
This section provides clarification of terms used in this chapter.
	Subsection (4) provides clarification of when content is considered "detected". This content may be detected by the service provider through a number of means, including automated monitoring systems (such as hash matching), human moderators or user reports. The requirement to report CSEA content is based on when content is detected, not when the offence occurred.
	Subsection (5) sets out that content is considered "‘unreported" by the service if that service does not meet exemptions listed at subsection (5)(a) and (5)(b) by reporting on to a foreign agency or to the NCA. The reporting to the foreign agency may be on a mandatory or voluntary basis.
	Subsection (6) describes the term "UK-linked" for the purpose of the reporting requirement. The content may be UK-linked based on the place where content is published, generated, uploaded or shared in the United Kingdom; the nationality of the person suspected of committing the related offence; or where the person suspected of committing the related offence is located in the United Kingdom or where the child who is the suspected victim of the related offence is located in the United Kingdom. Where a non-United Kingdom service is able to establish a United Kingdom link as described in subsection (6), this content must be reported to the NCA if it has not already been reported under alternative voluntary or mandatory reporting regimes. The information that a service provider has available to them to determine whether CSEA content is linked to the United Kingdom will vary depending on the nature of that service and the information they collect on their users. The legislation does not specify how services could determine location, but this can be determined through multiple indicators, which may include IP addresses, Media Access Control (MAC) addresses, information provided by users on their profiles, etc.
	There will not be a consequence if the provider reports CSEA content to the NCA which the provider thinks might have a link to the United Kingdom, but does not.
	The term "foreign agency" noted at subsection (7) denotes the exemption for services who report under alternative voluntary or mandatory reporting outside of the United Kingdom.