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Frazer-Nash Consultancy, Assystem and AtkinsRéalis selected to support UK submarines programme by Rolls-Royce Submarines

05/12/2025
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Applying its world-renowned expertise in nuclear and defence, Frazer-Nash Consultancy has been selected by Rolls-Royce Submarines to help strengthen international security, by maintaining the UK’s Continuous At Sea Deterrent.

Lasting for five years and with a potential value of up to 400 million GBP, the new Capability Assured Strategic Partnership (CASP) is one of the largest single supply chain contracts in the history of Rolls-Royce Submarines. Frazer-Nash has been selected to provide submarine nuclear reactor design, analysis, manufacture, assurance and in-service support to help ensure safe, efficient submarine operations. 

Frazer-Nash will work alongside AtkinsRéalis and Assystem to meet the growing demand from the UK Royal Navy’s submarine programme by supporting the UK’s Defence Nuclear Enterprise and AUKUS, the trilateral security pact between Australia, the UK and US. 

The new CASP framework builds on Frazer-Nash’s long‑standing collaboration with Rolls‑Royce Submarines which has endured and thrived for over 20 years. The framework represents not only an exciting evolution and step change in Frazer-Nash’s long-term relationship with its Rolls-Royce Submarine industry partners but also a significant opportunity to leverage joint nuclear and defence capabilities strategically to benefit a nationally important, technically challenging and inspiring endeavour. 

Chris Walker, Supply Chain Director at Rolls-Royce Submarines said: “We are in a nuclear renaissance across the UK and demand for this expert capability is growing all the time. The intent behind this strategic alliance is to harness the collective capabilities of each party to successfully deliver complex nuclear programmes and explore advanced nuclear technologies.” 

“We recognise that if we want to grow our business and maintain our critical commitments to the Ministry of Defence, then we cannot do it alone. Our decades-long relationships with Assystem, AtkinsRéalis and Frazer-Nash see the partners ideally placed to support us, bringing unique insight across the capability landscape.” 

Keith Beckett, Deputy CEO and AUKUS Director for the Submarine Delivery Agency, the Defence Nuclear Enterprise’s delivery agent for submarines, said: “This agreement exemplifies the Defence Industrial Strategy in action. By uniting leading UK nuclear expertise through CASP, we're strengthening our industrial base to deliver the submarine capabilities our nation requires.” 

“The Submarine Delivery Agency welcomes this investment in nuclear skills and collaboration with UK businesses that will enable us to deliver available and capable submarines to the Royal Navy and meet our commitment to our AUKUS partners." 

Sarah Wilkes, Frazer-Nash Managing Director said: “At Frazer-Nash we talk about solving challenges that matter and there aren’t many more important than national security.  CASP is an exciting development which will see us working closer and better with Rolls-Royce Submarines, AtkinsRéalis, and Assystem, combining our expertise and specialisms in new ways to help keep the UK safe.”