Recommendation 31

However, costs of the DNE are rising, driven by various factors.69 The Department is seeking to quicken the pace of delivering its nuclear programmes. The Department noted, however, that there is a very strong correlation between speeding up the schedule and costs, because many of the costs are workforce related. Inflation continues to flow through into costs. The Department has also added new programmes to the DNE, such as to re-establish the capability to produce nuclear reactor fuel for defence 62 Q 60 63 Letter from the Permanent Secretary of the Ministry of Defence relating to the future of the Defence Equipment Plan, 13 May 2025 64 Q 41 65 The overall defence budget also increased between 2023–24 and 2024–25 meaning that the nuclear budget as a percentage was around 18% of the total budget. 66 Q 12 67 Q 15 68 Qq 19 and 20 69 Q 13 17 purposes.70 In consequence, forecast costs for the DNE for the ten years from 2023 and 2033 have increased by around £10 billion to approximately £128 billion from the £117.8 billion reported in the NAO’s 2023 Equipment Plan report.71 However, that 2023 Plan itself had reported that the DNE’s costs were already £7.9 billion more than its budget of £109.8 billion.72