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Investigatory Powers Act 2016 (c. 25)
Part 5 — Equipment interference
Cancellation of warrants
(1)
Any of the appropriate persons may cancel a warrant issued under this Part at
any time.
(2)
If any of the appropriate persons considers that—
(a) a warrant issued under this Part is no longer necessary on any relevant
grounds, or
(b) the conduct authorised by a warrant issued under this Part is no longer
proportionate to what is sought to be achieved by the conduct,
the person must cancel the warrant.
(3)
In subsection (2)(a), “relevant grounds” means—
(a) in the case of a warrant issued under section 102, grounds falling within
section 102(5);
(b) in the case of a warrant issued under section 103, the purpose of
preventing or detecting serious crime;
(c) in the case of a warrant issued under section 104, the interests of
national security;
(d) in the case of a warrant issued under section 106(1), the purpose
mentioned in section 106(1)(a);
(e) in the case of a warrant issued under section 106(3), the purpose
mentioned in section 106(3)(a).
(4)
For the purposes of this section, “the appropriate persons” are—
(a) in the case of a warrant issued by the Secretary of State under section
102 or 104, the Secretary of State or a senior official acting on behalf of
the Secretary of State;
(b) in the case of a warrant issued by the Scottish Ministers under section
103, a member of the Scottish Government or a senior official acting on
behalf of the Scottish Ministers;
(c) in the case of a warrant issued under section 106 by a law enforcement
chief or by an appropriate delegate in relation to the law enforcement
chief, either—
(i) the law enforcement chief, or
(ii) if the warrant was issued by an appropriate delegate, that
person.
(5)
Where a warrant is cancelled under this section, the person to whom the
warrant was addressed must, so far as is reasonably practicable, secure that
anything in the process of being done under the warrant stops as soon as
possible.
(6)
A warrant that has been cancelled under this section may not be renewed.
Implementation of warrants
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(1)
Implementation of warrants
In giving effect to a targeted equipment interference warrant, the person to
whom it is addressed (“the implementing authority”) may (in addition to
acting alone) act through, or together with, such other persons as the
implementing authority may require (whether under subsection (2) or