(1) An appropriation, in accordance with which the Crown is authorised to incur expenses and capital expenditure, is made for the expenses and capital expenditure to be incurred by an intelligence and security department set out in column 3 of Schedule 2.
(2) The appropriation provided by subsection (1) is limited to—
(a) the amount authorised by the Appropriation (2008/09 Estimates) Act 2008 for that appropriation as varied by the amount specified in column 4 of Schedule 2 alongside the appropriation; and
(b) the scope shown in the Supplementary Estimates for the appropriation.
(3) The appropriation provided by subsection (1) includes the expenses and capital expenditure that have been incurred—
(a) under any Imprest Supply Act passed in relation to this year; and
(b) in advance, but within the scope, of that appropriation.