Select committee: Public Accounts Committee
Recommendation 25
24th Report - Government cyber resilience
Published 9 May 2025
Addressed to HM Treasury
Public Accounts Committee Government cyber resilience All items in this report Report on parliament.uk ↗ Inquiry on parliament.uk ↗
Recommendation (the committee's words)
We challenged DSIT and the Cabinet Office on why they were not identifying and fixing legacy IT systems, where the risk is greatest and security lowest. DSIT told us that before 2023 the centre of government did not have much information about legacy IT but this was improving. DSIT data showed that around 28% of the public sector’s IT estate was legacy. Twenty–eight public sector organisations had identified 319 legacy systems and self–assessed almost 25% of these as ‘red’ for risk.53 DSIT said it wanted to expand this work and better align it with GovAssure.54 We asked how many legacy assets there were in total across government. DSIT told us it did not know, and that 15% of organisations it had spoken to, as part of the State of digital government review, also did not know the what the situation was for their own legacy IT.55
From: Public Accounts Committee, 24th Report - Government cyber resilience (HC 643), 9 May 2025
Government response
Latest Treasury Minutes progress report to the Committee of Public Accounts on the Twenty-fourth Report of Session 2024-26
The government responded to the whole report on 4 June 2026.
Treasury minutes: Government response to the Committee of Public Accounts on the Twenty-fourth report from Session 2024-26
Published 18 September 2025.
Summary written by Accountability Index from the government's response. It is not the government's own words.The government "agrees with the Committee's recommendation" in each of the six areas, setting target implementation dates between winter 2025 and autumn 2026.
- On the evolving threat, the government agrees, notes responsibility has moved to DSIT, and says DSIT will publish an implementation plan in winter 2025 and write to the Committee "in one year's time".
- On cyber skills, it "acknowledges the ongoing cyber skills gaps" and says that "Early next year" DSIT will set how many anticipated vacancies its central initiatives will address and how it will assist departments with the remaining gaps.
- On accountability and funding, DSIT will set expectations for departments to appoint a board member with cyber security and digital resilience expertise, and is "working with HMT on mechanisms for protecting budgets" for cyber and legacy remediation programmes.
- On arm's-length bodies and supply chains, it says departments remain "ultimately accountable for the risk" and that DSIT will "assure and enforce" that Accounting Officers are meeting this responsibility.