Question to the HM Treasury:

To ask the Chancellor of the Exchequer, if his Department will publish a detailed breakdown of how other departments' capital budgets have been reduced in order to fund the Defence Investment Plan.

In June, the government announced £15 billion between 2026-27 and 2029-30 for the Defence Investment Plan. It confirmed that £10.3 billion would be funded by reprioritising public spending, with details set out at:

The Defence Investment Plan Funding explainer - GOV.UK

To fund the residual £4.7 billion, Budget 2026 confirms that departmental capital budgets will be reduced by a further 1% from 2027-28 to 2029-30 to raise £3 billion, and an additional £1.7 billion will be funded from unallocated contingency in the Treasury’s capital Reserve.

Updated departmental capital budgets, which reflect these changes, were published at Budget 2026.