(1)Where the whole or part of a hereditament or agricultural unit is comprised in land of any of the specified descriptions, and a person claims that—
(a)he is entitled to an interest in that hereditament or unit; and
(b)the interest is one which qualifies for protection under these provisions; and
(c)since the relevant date he has made reasonable endeavours to sell that interest; and
(d)he has been unable to sell it except at a price substantially lower than that for which it might reasonably have been expected to sell if no part of the hereditament or unit were comprised in land of any of the specified descriptions,
he may serve on the appropriate authority a notice in the prescribed form requiring that authority to purchase that interest to the extent specified in, and otherwise in accordance with, these provisions.
(2)Subsection (1) of this section shall apply in relation to an interest in part of a hereditament or agricultural unit as it applies in relation to an interest in the entirety of a hereditament or agricultural unit:
Provided that this subsection shall not enable any person—
(a)if he is entitled to an interest in the entirety of a hereditament or agricultural unit, to make any claim or serve any notice under this section in respect of his interest in part of the hereditament or unit; or
(b)if he is entitled to an interest only in part of a hereditament or agricultural unit, to make or serve any such claim or notice in respect of his interest in less than the entirety of that part.
(3)In this section " the relevant date "—
(a)in relation to land indicated, allocated or defined as mentioned in paragraph (a), (b) or (c) of subsection (1) of section 192 of this Act, means the date (whether before or after the commencement of this Act) on which the development plan, or the amendment of the development plan, by virtue of which the land was first so indicated, allocated or defined came into operation;
(b)in relation to land falling within paragraph (d) of that subsection, means the date (whether before or after the commencement of this Act) of the coming into force of the order or scheme by virtue of which it falls within that paragraph;
(c)in relation to land falling within paragraph (e) of that subsection, means the date (whether before or after the commencement of this Act) of the passing of the resolution by virtue of which it falls within that paragraph;
(d)in relation to land falling within paragraph (f) of that subsection, means the date (whether before or after the commencement of this Act) on which the Secretary of State gave to the local planning authority the written notice specified in that paragraph ;
(e)in relation to land falling within paragraph (g) of that subsection, means the date (whether before or after the commencement of this Act) on which the order for the compulsory acquisition of the right or rights over the land was confirmed or made by the Secretary of State;
(f)in relation to land falling within paragraph (h) of that subsection, means the date (whether before or after the commencement of this Act) on which the information in question was first published;
(g)in relation to land falling within paragraph (i) of that subsection, means the date (whether before or after the commencement of this Act) on which the special enactment in question came into operation;
(h)in relation to land falling within paragraph (j) of that subsection, means the date (whether before or after the commencement of this Act) on which the order for its compulsory purchase was confirmed or made by the Secretary of State.
(4)In these provisions " the claimant", in relation to a blight notice, means the person who served that notice, and any reference to the interest of the claimant, in relation to such a notice, is a reference to the interest which the notice requires the appropriate authority to purchase as mentioned in subsection (1) of this section.