Any land on which no building designed or adapted for human occupation is erected and is "Farm land" within the meaning of section 3(1) of the Valuation of Land Act 1960.
farm land means any rateable land—
(a) that is not less than 2 hectares in area; and
(b) that is used primarily for grazing (including agistment), dairying, pig-farming, poultry-farming, fish-farming, tree-farming, bee-keeping, viticulture, horticulture, fruit-growing or the growing of crops of any kind or for any combination of those activities; and
(c) that is used by a business—
(i) that has a significant and substantial commercial purpose or character; and
(ii) that seeks to make a profit on a continuous or repetitive basis from its activities on the land; and
(iii) that is making a profit from its activities on the land, or that has a reasonable prospect of making a profit from its activities on the land if it continues to operate in the way that it is operating.