6If any person aggrieved by an order under section 1 of this Act desires to question the validity thereof, or of any provision contained therein, on the ground that it is not within the powers of this Act or that any requirement of this Act has not been complied with in relation to the order, he may, within six weeks from the date on which notice of the making of the order is first published in accordance with the provisions of this Schedule in that behalf, make an application to the Court of Session; and on any such application the Court—
(a)may by interim order suspend the operation of the order or any provision contained therein, either generally or in so far as it affects any property of the applicant, until the final determination of the proceedings ; and
(b)if satisfied that the order or any provision contained therein is not within the powers of this Act or that the interests of the applicant have been substantially prejudiced by any requirement of this Act not having been complied with, may quash the order or any provision contained therein, either generally or in so far as it affects any property of the applicant.
7Subject to the provisions of paragraph 6 above, an order under section 1 of this Act shall not, either before or after it has been made, be questioned in any legal proceedings whatsoever, and shall become operative on the date on which notice is first published as mentioned in that paragraph.