155.—(1) Where, in the opinion of the planning authority, due to the nature of an unauthorised development and to any other material considerations, it is necessary to take urgent action with regard to the unauthorised development, notwithstanding sections 152 and 153, it may serve an enforcement notice under section 154.

(2) Where an enforcement notice is issued in accordance with subsection (1), any person who made a representation under section 152(1)(a) shall be notified in writing within two weeks of the service of the notice.