18.–Section 23 of the Principal Act is amended–
(a) in subsection (1), by inserting the following paragraph before paragraph (b):
"(aa) endanger the life or safety of any person,",
(b) in subsection (2), by inserting "(aa)," before "(a), (b) or (c)",
and the said subsection (2), as so amended, is set out in the Table to this section.
(2) Where a request under section 7 relates to a record to which subsection (1) applies, or would, if the record existed, apply, and the head concerned is satisfied that the disclosure of the existence or non-existence of the record would have an effect specified in paragraph (aa), (a), (b) or (c) of that subsection, he or she shall refuse to grant the request and shall not disclose to the requester concerned whether or not the record exists.