16
Accepted
For the UK, delivering SSN-AUKUS will be a lengthy and complex undertaking requiring a sustained...
Recommendation
For the UK, delivering SSN-AUKUS will be a lengthy and complex undertaking requiring a sustained financial commitment from Government across several electoral cycles. It is deeply concerning that there are signs that the investment pipeline that underpins that commitment has already faltered. This cannot be allowed to happen again: the need for timely and appropriate levels of investment must be prioritised within Whitehall. Shortfalls or delays in funding risk a failure to deliver SSN-AUKUS on time, with potentially severe consequences for UK and wider Euro-Atlantic security, and our standing with our trilateral partners. (Conclusion, Paragraph 76)
Government Response Summary
The government agrees with the importance of sustained financial commitment to AUKUS and details over £6 billion allocated to transform the UK Submarine Base, including specific investments in Rolls-Royce and Sheffield Forgemasters, demonstrating existing prioritisation.
Government Response
Accepted
Government Response
Accepted
HM Government
Accepted
The Government thanks the Committee for its recommendation and agrees with the importance of financial commitment to AUKUS across electoral cycles. AUKUS is a multi-decade endeavour requiring sustained focus and significant investment to ensure successful delivery. This has been consistently demonstrated through this Government’s ongoing investment in the UK Submarine Industrial Base. The Strategic Defence Review, published in June 2025, committed to producing a submarine on an 18-month drumbeat. Building on this, the subsequent Spending Review allocated over £6 billion to transform the UK Submarine Base, with more than £1 billion already on contract, laying a strong financial foundation to deliver that ambition. Key investments include the Defence Secretary’s £9 billion agreement with Rolls-Royce Submarines in January 2025 to produce nuclear reactors; £1.3 billion invested at Sheffield Forgemasters for steel and castings forming the SSN-AUKUS hull and reactor plant. Additionally, an initial £250 million investment over three years has begun the multi-decade redevelopment of HM Naval Base Clyde through the ‘Clyde 2070’ programme. Over the last three years, we have seen submarine productivity rates increase, including significant increases in productivity in Dreadnought manufacturing and build volume. Infrastructure development at Rolls- Royce, Raynesway, also continues to advance at pace.
Addressee Bodies
Ministry of Defence
Timeline
Recommendation age
0.3 yrs
Report published
28 Apr 2026