(1)The Secretary of State may by order direct that subsection (1) of section 68 of this Act shall be amended by substituting, for the number of square feet specified in the subsection as originally enacted or as previously amended under this subsection, such number of square feet as may be specified in the order being not less than 1,000 square feet.
(2)Any amendment made by an order under this section may be made so as to have effect either in relation to the whole of England and Wales or in relation only to a part of England and Wales specified in the order.
(3)Any amendment made by such an order shall have effect—
(a)in relation to applications for planning permission relating to land in any area to which the order applies which are made on or after the date on which the order comes into operation; and
(b)in relation to applications relating to land in such an area which have been made before that date, other than any application on which a planning decision has been made before that date.
(4)Where in accordance with subsection (3) of this section an amendment made by such an order has effect in relation to an application for planning permission made before the date on which the order comes into operation, so much of section 67(1) of this Act as requires a copy of an industrial development certificate to be furnished to the local planning authority together with the application shall have effect in relation to that application with the substitution, for the words " together with the application " , of the words " as soon as practicable after the certificate is issued "
(5)In this section any reference to land in any area to which an order under this section applies shall be construed as a reference to land of which any part is in that area.