4.—(1) For the purposes of these Regulations, expenses towards which grant is payable by virtue of these Regulations are expenses falling within the description of expenses set out in Schedule 1.
(2) Subject to paragraphs (4) and (5) below, there shall be payable by the Scottish Ministers towards the expenses incurred by each police authority in or in connection with the discharge of their civil defence functions, grants to that authority in accordance with the following provisions of these Regulations.
(3) Grants payable towards expenses by virtue of these Regulations shall amount to complete reimbursement of the expenses.
(4) No grants shall be payable towards expenses incurred for any purpose by a police authority which would have been incurred for that purpose if no civil defence functions had been conferred on that authority.
(5) Grants shall not be payable towards the following expenses, namely:–
(a)any expenses which are incurred without the prior approval of the Scottish Ministers unless they are expenses either of a class in respect of which, or incurred in circumstances in which, the Scottish Ministers dispense with the requirement of prior approval; and
(b)the excess of any item of expenses over the amount which the Scottish Ministers determine to be reasonable for that item.