Question to the HM Treasury:

To ask the Chancellor of the Exchequer, with reference to page 45, clause 15, of the National Security Document 2025: Security for the British people in a dangerous world, if she will list (a) all government departments that will be included in the commitment to spend 2.6 percent of GDP on defence expenditure from 2027 and (b) the financial quantum in each case.

This question was answered on 4th July 2025
The National Security Strategy 2025 was published on 24 June 2025. It confirms that by combining an increase in funding with recognition of the vital contribution the Single Intelligence Account plays to our national defence, the UK will spend 2.6% on NATO qualifying defence spending from 2027.

The inclusion of departmental spending that falls under NATO qualifying defence spending definitions will continue to be periodically reviewed in line with NATO guidance.