14In paragraph 13 of this Schedule the reference to determination in the requisite manner of the area and value of a claim holding is a reference to the determination thereof on the occasion of an apportionment affecting that holding which fell or falls to be made for any of the purposes of the Act of 1954, of Part VII of this Act or of this Schedule, being a determination made—
(a)by the authority making that apportionment; or
(b)where, under the Act of 1954 or Part VII of this Act, that authority’s findings were or are referred to the Lands Tribunal, by that Tribunal,
having regard in particular to the principles mentioned in paragraph 15 of this Schedule.