"4. (1) The marriage value is the amount referred to in sub-paragraph (2), and the freeholder's share of the marriage value is - 50 per cent of that amount. (2) Subject to sub-paragraph (2A), the marriage value is any increase in the aggregate value of the freehold and every intermediate leasehold interest in the specified premises, when regarded as being (in consequence of their being acquired by the nominee purchaser) interests under the control of the participating tenants, as compared with the aggregate value of those interests when held by the persons from whom they are to be so acquired, being an increase in value - (a) which is attributable to the potential ability of the participating tenants, once those interests have been so acquired, to have new leases granted to them without payment of any premium and without restriction as to length of term, and (b) which, if those interests were being sold to the nominee purchaser on the open market by willing sellers, the nominee purchaser would have to agree to share with the sellers in order to reach agreement as to price. (2A) Where at the relevant date the unexpired term of the lease held by any of those participating members exceeds eighty years, any increase in the value of the freehold or any intermediate leasehold interest in the specified premises which is attributable to his potential ability to have a new lease granted to him as mentioned in sub-paragraph (2)(a) is to be ignored. (3) For the purposes of sub-paragraph (2) the value of the freehold or any intermediate leasehold interest in the specified premises when held by the person from whom it is to be acquired by the nominee purchaser and its value when acquired by the nominee purchaser - (a) shall be determined on the same basis as the value of the interest is determined for the purposes of paragraph 2(l)(a) or (as the case may be) paragraph 6(l)(b)(i); and (b) shall be so determined as at the valuation date. (4) Accordingly, in so determining the value of an interest when acquired by the nominee purchaser - (a) the same assumptions shall be made under paragraph 3(1) (or, as the case may be, under paragraph 3(1) as applied by paragraph 7(1)) as are to be made under that provision in determining the value of the interest when (b) any merger or other circumstances affecting the interest on its acquisition by the nominee purchaser shall be disregarded."
"2 (1) Subject to the provisions of this paragraph, [where the freehold of the whole of the specified premises is owned by the same person] the price payable by the nominee purchaser for the freehold of [those] premises shall be the aggregate of— (a) the value of the freeholder's interest in the premises as determined in accordance with paragraph 3, (b) the freeholder's share of the marriage value as determined in accordance with paragraph 4, and (c) any amount of compensation payable to the freeholder under paragraph 5 (2) Where the amount arrived at in accordance with sub-paragraph (1) is a negative amount, the price payable by the nominee purchaser for the freehold shall be nil. Value of freeholder's interest 3 (1) Subject to the provisions of this paragraph, the value of the freeholder's interest in the specified premises is the amount which at [the relevant date] that interest might be expected to realise if sold on the open market by a willing seller (with [no person who falls within sub-paragraph (1 A)] buying or seeking to buy) on the following assumptions— (a) on the assumption that the vendor is selling for an estate in fee simple - (i) subject to any leases subject to which the freeholder's interest in the premises is to be acquired by the nominee purchaser , but (ii) subject also to any intermediate or other leasehold interests in the premises which are to be acquired by the nominee purchaser; (b) on the assumption that this Chapter and Chapter II confer no right to acquire any interest in the specified premises or to acquire any new lease (except that this shall not preclude the taking into account of a notice given under section 42 with respect to a flat contained in the specified premises where it is given by a person other than a participating tenant); (c) on the assumption that any increase in the value of any flat held by a participating tenant which is attributable to an improvement carried out at his own expense by the tenant or by any predecessor in title is to be disregarded; and (d) on the assumption that (subject to paragraphs (a) and (b)) the vendor is selling with and subject to the rights and burdens with and subject to which the conveyance to the nominee purchaser of the freeholder's interest is to be made, and in particular with and subject to such permanent or extended rights and burdens as are to be created in order to give effect to Schedule 7. [(1 A) A person falls within this sub-paragraph if he is - (a) the nominee purchaser , or (b) a tenant of premises contained in the specified premises, or [(ba) an owner of an interest which the nominee purchaser is to acquire in pursuance of section l(2)(a), or] (c) an owner of an interest which the nominee purchaser is to acquire in pursuance of section 2(l)(b).] (2) It is hereby declared that the fact that sub-paragraph (1) requires assumptions to be made as to the matters specified in paragraphs (a) to (d) of that sub-paragraph does not preclude the making of assumptions as to other matters where those assumptions are appropriate for determining the amount which at [the relevant date] the freeholder's interest in the specified premises might be expected to realise if sold as mentioned in that sub-paragraph."