The Secretary of State may—
by order establish an authority (to be known as "a National Park authority") to carry out in relation to that Park the functions conferred on such an authority by or under this Part.
An order under this section may provide, in relation to any National Park for which there is an existing authority—
Subject to any order under subsection (4) below, where there is a variation of the area of a National Park for which there is or is to be a National Park authority, the Park for which that authority is or is to be the authority shall be deemed, as from the time when the variation takes effect, to be that area as varied.
Where provision is made for the variation of the area of a National Park for which there is or is to be a National Park authority, the Secretary of State may by order make such transitional provision as he thinks fit with respect to—
Schedule 7 to this Act shall have effect with respect to National Park authorities.