A notice under section 9(1) or 16(1), (4) or (5) (including a refusal notice given by virtue of section 18(1)) or 17(1) must contain particulars—
(a)of the procedure provided by the authority for dealing with complaints about the handling by it of requests for information; and
(b)about the rights of application to the authority and the Commissioner conferred by sections 20(1) and 47(1).