In relation to development consisting of the construction of a scheduled work, it is a condition of the deemed planning permission under section 20(1) that the development must be begun not later than the end of 10 years beginning with the day on which this Act is passed.
The Secretary of State may, in relation to any such development, by order extend the period within which the development must be begun by virtue of this section.
An order under subsection (2) must be made by statutory instrument; and a statutory instrument containing such an order is subject to annulment in pursuance of a resolution of either House of Parliament.
Section 91 of the Town and Country Planning Act 1990 (limit on duration of planning permission) does not apply to deemed planning permission under section 20(1).