Written Question·Treasury·UIN 119616

Budgets: Disclosure of Information

Tabled: 10 March 2026

Answered: 18 March 2026

Question

Charlie Dewhirst

Conservative — Bridlington and The Wolds

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 El

Answer

James Murray

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.