In relation to the processing of personal data to which the UK GDPR applies, Article 80(1) of the UK GDPR (representation of data subjects)—
In relation to the processing of personal data to which the UK GDPR does not apply, a body or other organisation which meets the conditions in subsections (3) and (4), if authorised to do so by a data subject, may exercise some or all of the following rights of a data subject on the data subject's behalf—
The first condition is that the body or organisation, by virtue of its constitution or an enactment—
The second condition is that the body or organisation is active in the field of protection of data subjects' rights and freedoms with regard to the protection of their personal data.
In this Act, references to a "representative body", in relation to a right of a data subject, are to a body or other organisation authorised to exercise the right on the data subject's behalf under Article 80 of the UK GDPR or this section.