(1) It is the duty of an enforcement authority to consider any complaint made to it about a contravention of these Regulations, unless -

(a) the complaint appears to the authority to be frivolous or vexatious, or

(b) another enforcement authority has notified the CMA that it agrees to consider the complaint.

(2) If an enforcement authority has notified the CMA as mentioned in paragraph (1)(b), that authority is under a duty to consider the complaint.

(3) The following are enforcement authorities for the purposes of these Regulations -

(a) every local weights and measures authority in Great Britain;

(b) the Department of Enterprise, Trade and Investment in Northern Ireland.