Paragraph 4
Subject to the following provisions, a local planning authority (other than a London borough council) to whom application is made for listed building consent shall not grant such consent, unless they have notified the Minister of the application (giving particulars of the works for which the consent is required) and either—
a period of twenty-eight days has expired, beginning with the date of the notification, without the Minister having direoted the reference of the application to him ; or
the Minister has notified the authority that he does not intend to require the reference of the application.
The Minister may at any time before the said period expires give notice to the authority that he requires further time in which to consider whether to require the reference of the application to him and the foregoing sub-paragraph shall then have effect with the substitution for a period of twenty-eight days or such longer period as may be specified in the Minister's notice.