Section 18 (Attachment of brackets, etc., to buildings for purposes of works) of the Act of 1988 shall be amended by the insertion at the end of the section of the following:—
“(2)For the purpose of the provisions of the said section 45 applied by subsection (1) above, consent to the affixing of attachments to a building under subsection (2) of that section shall be deemed to have been withheld if no such consent is received by the Executive before the expiration of the period of 56 days beginning on the date on which the Executive serve on the owner of the building, in accordance with section 285 of the [1936 c. 49.] Public Health Act 1936, notice of an application for such consent.”.