Section 170 “Appropriate enactment” for purposes of Chapter II

(1)     Subject to the following provisions of this section, in this Chapter “the appropriate enactment”, in relation to land falling within any paragraph of Schedule 13, means the enactment which provides for the compulsory acquisition of land as being land falling within that paragraph or, as respects paragraph 22(b), the enactment under which the compulsory purchase order referred to in that paragraph was made.

(2)     In relation to land falling within paragraph [1B, 1C,] 2, 3 or 4 of that Schedule, an enactment shall for the purposes of subsection (1) be taken to be an enactment which provides for the compulsory acquisition of land as being land falling within that paragraph if—