Where a closure order is made in relation to premises, the chief executive officer of the relevant local authority—
may cancel the closure order by notice in writing to a manager of the premises,
shall cancel the order as soon as is reasonably practicable if he believes that it is no longer necessary in order to prevent a public nuisance being caused by noise coming from the premises, and
shall give notice of the order as soon as is reasonably practicable to the licensing authority for the area in which the premises are situated.
The chief executive officer of a local authority may authorise an environmental health officer of the authority to exercise a power or duty of the chief executive officer under section 40(1) or under subsection (1) above; and—
authority under this subsection may be general or specific, and
a reference in section 40(1) or subsection (1) above to a belief of the chief executive officer includes a reference to a belief of a person authorised under this subsection.
In section 40 and this section—