Where development authorised by this Act consists of the carrying out of a work which is not a scheduled work, subsection (1) does not apply if—
Schedule 17 imposes conditions on deemed planning permission under subsection (1).
Deemed planning permission under subsection (1) is specific planning permission for the purposes of section 264(3)(a) of the Town and Country Planning Act 1990 (specific planning permission for development of statutory undertakers' land relevant to whether the land is operational land).
Development which has deemed planning permission under subsection (1) is not development of a class for which planning permission is granted by the Town and Country Planning (General Permitted Development) (England) Order 2015 (S.I. 2015/596) (or any order replacing it).