Regulation 18 Consideration of complaints
(1) An enforcement authority shall consider any complaint made to it about a breach unless -
(a) the complaint appears to that authority to be frivolous or vexatious; or
(b) that authority is aware that another enforcement authority has agreed, by notifying that authority or the relevant regulator, to consider the complaint.
(2) If an enforcement authority notifies another enforcement authority or the relevant regulator that it agrees to consider a complaint made to another enforcement authority, the first mentioned authority shall be under a duty to consider the complaint.