s 89 Circumstances in which land incapable of reasonably beneficial use.
Where, for the purpose of determining whether the conditions specified in section 88(3) or (4) are satisfied in relation to any land, any question arises as to what is or would in any particular circumstances be a reasonably beneficial use of that land, then, in determining that question for that purpose, no account shall be taken of any prospective development other than any development specified in paragraph 1 or 2 of Schedule 11.