(1) The occupier of any premises must give a notice to the Secretary of State before any dangerous substance is kept or used there.
(2) Subsection (1) does not apply to premises in respect of which a notice has previously been given under that subsection (unless it has been withdrawn).
(3) The occupier of any premises in respect of which a notice has been given may withdraw the notice if no dangerous substance is kept or used there.
(4) A notice under this section must-
(a) identify the premises in which the substance is kept or used;
(b) identify any building or site of which the premises form part; and
(c) contain such other particulars (if any) as may be prescribed.
(5) The occupier of any premises in which any dangerous substance is kept or used on the day on which this section comes into force must give a notice under this section before the end of the period of one month beginning with that day.
(6) Where-
(a) a substance which is kept or used in any premises becomes a dangerous
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