Part 6: Bulk warrants Chapter 3: Bulk equipment interference warrants Section 189: Cancellation of warrants
This section sets out the circumstances under which a bulk equipment interference warrant may be cancelled.
	Where the Secretary of State or a senior official decides the warrant is no longer necessary or proportionate, or that the examination of material is no longer necessary for any of the operational purposes specified on the warrant, he or she must cancel it. A warrant may be cancelled by the Secretary of State or a senior official at any time.