Select Committee · Public Accounts Committee

NS&I’s transformation programme

Status: Open Opened: 10 Jul 2025 7 recommendations 22 conclusions 1 report

National Savings and Investments (NS&I), which borrows on behalf of government from retail investors via products such as premium bonds, has around 25m savers with over £230bn invested. It is undertaking a business transformation programme to replace Atos as the single supplier of its back-office and customer-facing functions with a multi-supplier model. Launched in 2019, … Show more

Clear

Reports

1 report
Title HC No. Published Items Response
67th Report - NS&I’s transformation programme HC 1237 13 Feb 2026 29 Responded

Recommendations & Conclusions

16 items
1 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

Evidence gathered from NS&I and Treasury on the Business Transformation Programme.

On the basis of a report by the Comptroller and Auditor General, we took evidence from National Savings & Investments (NS&I) and from HM Treasury (the Treasury) on NS&I’s Business Transformation Programme.1

Government response AI summary
The government acknowledges the Committee's foundational conclusion and provides an update on NS&I's Business Transformation Programme, including plans for developing options for a revised Full Business Case by Q2 2026-27 and leadership changes to address operational failures.
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HM Treasury
10 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I confident in delivery despite lack of plan, failing to justify programme approach.

Despite the lack of information on timetable and cost, NS&I claimed it was confident that it could find a way to deliver the Programme by 2028, by “deprioritising” some aspects of the Programme.22 When asked how it could be confident without an agreed integrated plan, NS&I could only say this … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about the lack of information on timetable and cost and are committed to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
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HM Treasury
11 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I questions evidence-based decisions and deflects blame for Programme failures.

When we asked if decisions were being taken based on evidence, NS&I said that “there is always a chance that assumptions are incorrect”.26 The National Infrastructure and Service Transformation Authority had found that NS&I’s understanding of the alternative approaches had not been robust, and NS&I said its understanding had improved … Read more

Government response AI summary
The Treasury and NS&I acknowledge these concerns and are committed to addressing them through robust planning, risk management, and governance. NS&I is working to develop a comprehensive integrated plan that includes clear timelines, cost estimates, and resource allocation.
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HM Treasury
12 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I leadership slow to act on advice, offering limited lessons from Programme issues.

The external organisations that have reviewed the programme told the NAO that NS&I was sometimes or often slow to act, or did not act at all, on advice.29 We asked whether NS&I’s leadership had learned from the issues with the Programme. NS&I offered two lessons: it acknowledged that it had … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about NS&I's slowness to act on advice and commit to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
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HM Treasury
13 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I's "good news" culture fosters over-optimism and hinders Programme progress assessment.

We asked the chief executive if he was creating a ‘good news’ culture, which the NAO has identified as a factor in why programmes resets may not work, and which can lead to a situation where decisions are not made and disagreements between stakeholders are not resolved. He told us … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about a 'good news' culture and are committed to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
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HM Treasury
14 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I internal review found slow, hierarchical decision-making and lack of transparency.

The Government Internal Audit Agency’s review of NS&I’s culture in December 2024, found that staff felt decision-making was slow and hierarchical, decision-making processes were not understood, and there was a lack of transparency within Programme processes.36 NS&I introduced a leadership development programme as a response to the review, and NS&I … Read more

Government response AI summary
The Treasury and NS&I acknowledge these concerns and are committed to addressing them through robust planning, risk management, and governance. NS&I is working to develop a comprehensive integrated plan that includes clear timelines, cost estimates, and resource allocation.
Read full response →
HM Treasury
15 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I launched risky parallel transitions lacking understanding and management of programme risks.

In taking forward the Programme, NS&I launched multiple procurements and planned to deliver four transitions in parallel, with no understanding of the risks that this was exposing the organisation and its customers to. NS&I said it had identified supply chain risk as a key area of focus.38 However, NS&I focused … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about the Programme's procurements and are committed to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
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HM Treasury
16 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I's core banking engine replacement and data migration pose significant risks

There are still many risks for the Programme to manage, for example the replacement of the ‘core banking engine’ is extremely high risk, but the main work has yet to start.41 NS&I agreed that when it replaced its banking engine, data migration would be a “huge consideration”, and said it … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about risks to the Programme and are committed to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
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HM Treasury
17 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I's new Risk Management Framework remains inadequately embedded and reliant on external expertise

In 2025, NS&I implemented a new Risk Management Framework, but has not yet fully embedded the framework throughout its organisation.43 We wanted assurance that this framework is good enough to ensure that risks to customer data could be managed, and NS&I claimed it was “comprehensive”.44 NS&I did say that it … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about risk management and are committed to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
Read full response →
HM Treasury
18 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I faces significant recruitment challenges, relying heavily on consultants for technical skills

NS&I had most of its operations contracted out when starting the Programme, and it had limited capability to deliver a digital transformation.46 NS&I told us it has found it difficult to recruit the additional skills and capability the Programme needs. It has made substantial use of consultants in the Programme, … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about skills and capability and are committed to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
Read full response →
HM Treasury
19 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I admits significant skills gaps, particularly in systems integration, hindering programme delivery

We pushed NS&I to tell us if it now had the skills and capability it needed. NS&I acknowledged that it had needed to bring in more capability, including in systems integration and at senior levels.50 It also, eventually, recognised that for a Programme “this big and complex, we will not … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about skills and capability and are committed to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
Read full response →
HM Treasury
20 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I's workforce plan lacks detail, with outdated cost estimates failing to reflect increased staffing

NS&I said it was now developing a plan for workforce management in a more structured way, but did not provide details.54 It had identified the need to transfer knowledge from consultants to permanent staff.55 Its recruitment 45 Q 63 46 C&AG’s Report, paras 8, 13 47 Q 67; C&AG’s Report, … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about workforce management and are committed to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
Read full response →
HM Treasury
21 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I's continued reliance on distressed supplier Atos necessitates improved contract management practices

NS&I will continue to rely on Atos, which suffered financial distress in 2024, until at least 2028. NS&I told us it now has a contract management framework to manage Atos and the contracts with new suppliers. NS&I will need to be much better at managing supplier contracts to maximise the … Read more

Government response AI summary
The Treasury and NS&I acknowledge these concerns and are committed to addressing them through robust planning, risk management, and governance. NS&I is working to develop a comprehensive integrated plan that includes clear timelines, cost estimates, and resource allocation.
Read full response →
HM Treasury
22 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

Treasury's 'earned autonomy model' for NS&I means intervention only occurs after issues emerge

NS&I has its own accounting officer and its own Board, and is responsible for the Programme, while the Treasury is NS&I’s sponsor in government and also has a role overseeing major programmes across government.64 The Treasury told us that it has to judge how it provides this oversight, operating an … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about the Treasury's oversight role and are committed to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
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HM Treasury
23 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

Treasury's intervention in NS&I's red-rated programme was significantly delayed despite early warnings

The NAO found that the Treasury has increased its scrutiny of the Programme since 2024, and had instigated changes to governance, including appointing new NEDs.66 The Treasury noted that it has now moved to a “quite interventionist” approach, but agreed that this could have happened earlier.67 Although the Treasury knew … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about the timing of increased scrutiny of the Programme and commit to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
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HM Treasury
24 Conclusion 67th Report - NS&I’s transformation pro… Acknowledged

NS&I's evolving governance structures lack clarity and substantive plans to prevent future issues

NS&I said its governance structures had evolved, and it would add more NEDs. It said these changes were improving delivery, but gave no substantive answer to how its governance would ensure problems did not happen again. It also acknowledged that there was still a lack of clarity over the role … Read more

Government response AI summary
The Treasury and NS&I acknowledge concerns about governance structures and are committed to addressing them through robust planning, risk management, and governance, including developing a comprehensive integrated plan and strengthening systems integration capabilities.
Read full response →
HM Treasury

Oral evidence sessions

1 session
Date Witnesses
18 Dec 2025 Dax Harkins · National Savings and Investments, James Bowler CB · HM Treasury, Matthew Smith · National Savings and Investments, Sam Beckett · Department for Business, Energy and Industrial Strategy, Stephen Farrington · HM Treasury View ↗

Who gave evidence

5 witnesses
WitnessOrganisationSessions
Dax Harkins · Chief Executive National Savings and Investments 1
James Bowler CB · Permanent Secretary HM Treasury 1
Matthew Smith · Programme Senior Responsible Officer National Savings and Investments 1
Sam Beckett · Acting Permanent Secretary Department for Business, Energy and Industrial Strategy 1
Stephen Farrington · Director of Fiscal Policy HM Treasury 1

Correspondence

7 letters
DateDirectionTitle
2 Mar 2026 To cttee Letter from the Chief Executive of NS&I relating to the NS&I transformation pro…
12 Feb 2026 From cttee Letter to the Chief Executive of NS&I regarding Notification of two contingent …
19 Jan 2026 To cttee Letter from the Permanent Secretary at HM Treasury relating to the Committee’s …
19 Jan 2026 NS&I’s Risk Management Framework [this relates to the letter (no. 2) from NS&I’…
19 Jan 2026 To cttee Letter from the Chief Executive Officer at NS&I relating to the Committee’s evi…
18 Dec 2025 To cttee Letter from Chief Executive NS&I regarding NS&I Departmental Minute Laid-Notifi…
15 Dec 2025 To cttee Letter from the Chief Executive of NS&I relating to the NS&I Business Transform…