Question to the HM Treasury:

To ask the Chancellor of the Exchequer, with reference to his Department's policy paper entitled Budget Information Security Review, published on 9 February 2026, whether her Department has identified the (a) individual and (b) entity that accessed the Electronic Financial Statement in March 2025.

This question was answered on 18th March 2026
As noted in Paragraph 3.6 of the Budget Information Security Review, the National Cyber Security Centre explained why it is not possible to identify to whom the IP addresses used to obtain early access in March or November 2025 belong.