45. The validity of an application for a certificate of lawful use or development is not affected by failure to disclose information as to—
(a)national security; and
(b)the measures taken or to be taken to ensure the security of any premises or property,
where the application is accompanied by a written statement from the applicant that, in the opinion of the applicant, the information relates to the matters mentioned in (a) or (b) above, and that public disclosure of that information would be contrary to the national interest.