This section applies where a purchase notice is served in respect of land which consists in whole or in part of land which has a restricted use by virtue of an existing planning permission.
For the purposes of this section, land is to be treated as having a restricted use by virtue of an existing planning permission if it is part of a larger area in respect of which planning permission has previously been granted (and has not been revoked) and either—
Where a copy of the purchase notice is sent to the Secretary of State under section 139(4), he need not confirm the notice under section 141(1) if it appears to him that the land having a restricted use by virtue of an existing planning permission ought, in accordance with that permission, to remain undeveloped or, as the case may be, remain or be preserved or laid out as amenity land in relation to the remainder of the large area for which that planning permission was granted.