200Requirement for authorisation by warrant: general
(1)An intelligence service may not exercise a power to retain a bulk personal dataset unless the retention of the dataset is authorised by a warrant under this Part.
(2)An intelligence service may not exercise a power to examine a bulk personal dataset retained by it unless the examination is authorised by a warrant under this Part.
(3)For the purposes of this Part, there are two kinds of warrant—
(a)a warrant, referred to in this Part as “a class BPD warrant”, authorising an intelligence service to retain, or to retain and examine, any bulk personal dataset of a class described in the warrant;
(b)a warrant, referred to in this Part as “a specific BPD warrant”, authorising an intelligence service to retain, or to retain and examine, any bulk personal dataset described in the warrant.
(4)Section 201 sets out exceptions to the restrictions imposed by subsections (1) and (2) of this section.