137Obtaining secondary dataU.K.
(1)This section has effect for the purposes of this Chapter.
(2)References to obtaining secondary data from a communication transmitted by means of a telecommunication system are references to obtaining such data—
(a)while the communication is being transmitted, or
(b)at any time when the communication is stored in or by the system (whether before or after its transmission),
and references to secondary data obtained under a bulk interception warrant are to be read accordingly.
(3)“Secondary data”, in relation to a communication transmitted by means of a telecommunication system, means any data falling within subsection (4) or (5).
(4)The data falling within this subsection is systems data which is comprised in, included as part of, attached to or logically associated with the communication (whether by the sender or otherwise).
(5)The data falling within this subsection is identifying data which—
(a)is comprised in, included as part of, attached to or logically associated with the communication (whether by the sender or otherwise),
(b)is capable of being logically separated from the remainder of the communication, and
(c)if it were so separated, would not reveal anything of what might reasonably be considered to be the meaning (if any) of the communication, disregarding any meaning arising from the fact of the communication or from any data relating to the transmission of the communication.
(6)For the meaning of “systems data” and “identifying data”, see section 263.
Commencement Information
I1S. 137 in force at 31.5.2018 by S.I. 2018/652, reg. 5(b)