Where any person would be required to serve any notice in respect of any works underF1 paragraph 3 or 4 if the works were not emergency works, that person shall serve a notice in respect of the emergency works as soon as practicable after commencing the works.

Failure to serve the notice required by sub-paragraph (1) shall be treated as a contravention of a requirement of the paragraph under which a notice would be required if the works were not emergency works.