Part 5: Equipment interference Section 121: Notification of modifications
This section provides that a Judicial Commissioner must be notified as soon as is reasonably practicable that a modification has been made and the reason for it. This notification requirement does not apply in circumstances where the Judicial Commissioner is required to approve the modification before it has effect, such as where it relates to Members of Parliament, items subject to legal privilege, items containing confidential journalistic material and material that identifies a journalist’s source. It also does not apply to urgent modifications where a different procedure applies (see section 122).
	Where a modification is made by a senior official, the Secretary of State or, in the case of a warrant issued by the Scottish Ministers, a member of the Scottish Government must be informed.