Any land being, or forming part of, a common, open space or fuel or field garden allotment, which has been acquired ' by a Minister, a local authority or statutory undertakers under this Part of this Act or compulsorily under any other enactment, or which has been appropriated by a local authority for planning purposes, may—
(a) in the case of land acquired by a Minister, be used in any manner by him or on his behalf for any purpose for which he acquired the land; and
(b) in any other case, be used by any person in any manner in accordance with planning permission,
notwithstanding anything in any enactment relating to land of that kind, or in any enactment by which the land is specially regulated.
Nothing in this section shall be construed as authorising any act or omission on the part of any person which is actionable at the suit of any person on any grounds other than contravention of any such enactment as is mentioned in subsection (1) of this section.