8
Accepted
NS&I still lacks an agreed integrated plan, facing further programme delays.
Recommendation
In December 2025, after five years, NS&I still has no agreed and approved integrated plan to indicate a Programme end date and milestones. NS&I has repeatedly failed to deliver such a plan.12 At our session in December 2025, NS&I said its system integrator Capgemini had now developed a draft plan, which showed that the Programme would run beyond March 2028. NS&I is now doing a re-planning exercise to try and compress the work and bring this end date forward. NS&I said it would take advice from David Goldstone on this work.13 NS&I could not tell us how much the plan would need to be adjusted, but claimed this would add months not years, and said it was aiming to finish its replanning by March 2026.14 This would leave just two years to complete the Programme before the Atos contract is due to end in March 2028.15 When pressed for whether it could deliver before the Atos contract ends, NS&I acknowledged it would look at extending the Atos contract, potentially to 2031, which would imply a further delay of 3 years and additional cost from the longer timeframe.16
Government Response Summary
The Treasury accepts the recommendation, confirming that NS&I is now working to an agreed and approved integrated Programme plan, with detailed Cost Management, Programme, and Benefits Realisation plans approved in March 2024. These plans define scope, costs, and ensure delivery against milestones, with ongoing monthly monitoring and quarterly reviews.
Government Response
Accepted
Government Response
Accepted
HM Government
Accepted
The Treasury accepts this recommendation. NS&I is now working to an agreed and approved integrated Programme plan which sets out the end date, key milestones and deliverables for the remaining phases of the Programme. NS&I’s Full Business Case for the Programme was approved in December 2023 and included the requirement for NS&I to develop a detailed Cost Management Plan, Programme Plan and Benefits Realisation Plan. All of these plans have been developed and were approved by the Treasury in March 2024. The plans clearly define the scope and costs for the full Programme and how benefits will be tracked and realised. The Programme plan will ensure that the Programme’s delivery remains on track against approved milestones and deliverables. The Treasury monitors the Programme plan on a monthly basis and reviews its progress against its key milestones at its quarterly assurance meetings. The Treasury continues to scrutinise the Programme and ensure that NS&I has robust processes in place to track and manage its Programme plans.
Source
Committee
Public Accounts Committee
Inquiry
NS&I’s transformation programme
Report
67th Report - NS&I’s transformation programme
13 Feb 2026
HC 1237
Addressee Bodies
HM Treasury
Timeline
Recommendation age
0.5 yr
Report published
13 Feb 2026