29.—(1) No information may be included in the register if and so long as, in the opinion of the Secretary of State, the inclusion in the register of that information, or information of that description, would be contrary to the interests of national security.
(2) For the purpose of securing the exclusion from the register of information to which paragraph (1) applies, the Secretary of State may give the competent authority directions—
(a)specifying information, or descriptions of information, to be excluded from the register; or
(b)specifying descriptions of information to be referred to the Secretary of State for his or her determination.
(3) No information referred to the Secretary of State under paragraph (2)(b) may be included in the register unless the Secretary of State determines that it should be included.
(4) The competent authority must notify the Secretary of State of any information it excludes from the register in accordance with directions given to it under paragraph (2).
(5) A person may give a written notice to the Secretary of State specifying information which appears to that person to be information to which paragraph (1) may apply and stating why it should not be included in the register.
(6) If a person gives a written notice under paragraph (5), at the same time that person must give written notice to the competent authority that they have done so.
(7) No information notified under paragraph (5) may be included in the register unless the Secretary of State determines that it should be included.