The following descriptions of land may not be included in a simplified planning zone—
Where land included in a simplified planning zone becomes land of a description mentioned in subsection (1), that subsection does not operate to exclude it from the zone.
The Secretary of State may by order provide that no simplified planning zone scheme shall have effect to grant planning permission—
An order under subsection (3) has effect to withdraw such planning permission under a simplified planning zone scheme already in force with effect from the date on which the order comes into force, except in a case where the development authorised by the permission has been begun.
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