25.—(1) Subject to the provisions of this Article, the provisions of this Part and of regulations and orders made under it shall bind the Crown to the full extent authorised or permitted by the constitutional laws of Northern Ireland.
(2) No contravention by the Crown of any provision of this Part or of any regulations or order made under it shall make the Crown criminally liable; but the High Court may, on the application of a relevant authority, declare unlawful any act or omission of the Crown which constitutes such a contravention.
(3) Notwithstanding anything in paragraph (2), the provisions of this Part and of regulations and orders made under it shall apply to persons in the public service of the Crown as they apply to other persons.
(4) If the Secretary of State certifies that it appears to him, as respects any premises held or used by or on behalf of the Crown and any power of entry exercisable in relation to them, that it is requisite or expedient that, in the interests of national security, the powers should not be exercisable in relation to those premises, those powers shall not be exercisable in relation to those premises.
(5) Any reference to the Crown in this Article includes the Crown in right of Her Majesty’s Government in the United Kingdom.