(1) A constable may, on giving notice under this section, enter any relevant premises, or any building or site of which the premises form part, at a reasonable time for the purpose of assessing the measures taken to ensure the security of any dangerous substance kept or used in the premises.
(2) The notice must be given to the occupier of the premises, or (as the case may be) the occupier of the building or site of which the premises form part, at least 2 working days before the proposed entry.
(3) The notice must set out the purpose mentioned in subsection (1).
(4) A constable who has entered any premises, building or site by virtue of subsection (1) may for the purpose mentioned in that subsection-
(a) search the premises, building or site;
(b) require any person who appears to the constable to be in charge of the premises, building or site to facilitate any such inspection; and
(c) require any such person to answer any question.
(5) The powers of a constable under this section inclu
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