13.—(1) All money transferred to or sums realised by Liverpool or Wirral by or in pursuance of the transfer by articles 6(1), 7(1)(a), (1)(b), (1)(f) and 11 of this Order of any property or rights shall, after deduction of any relevant expenditure, be apportioned among the local councils; and Liverpool or, as the case may be, Wirral, shall, not later than the end of the financial year following that in which it is received, pay the appropriate proportion to each of the other councils and shall retain the balance.
(2) If in any financial year the aggregate in that year of the money and sums referred to in paragraph (1) is insufficient to meet any relevant expenditure for that year, that expenditure shall be apportioned among the local councils; and the appropriate proportion shall be recoverable by Liverpool or Wirral, as the case may be, from each of the other local councils.
(3) In this article, “relevant expenditure” means expenditure attributable to this Order which is not defrayed by virtue of any other provision of this Order.