Amentum to Provide Specialist Services for UK’s Nuclear Waste Management Organization
CHANTILLY, VA., September 16, 2025 —Amentum (NYSE: AMTM) has been appointed as one of the suppliers on all four lots of a major new framework to support delivery of the United Kingdom’s waste management mission.
The Integrated Waste Management Specialist Nuclear Services Framework, awarded by Nuclear Waste Services (NWS), has an estimated value of £26 million over a four-year period.
Mark Whitney, president of Amentum Energy & Environment, said: “As the only company to win positions in all four lots, Amentum has the opportunity to provide critical specialist capabilities and solutions to enable NWS in ensuring safe and secure management of the UK’s radioactive waste.”
Under the new framework, Amentum will deliver a range of technical support to NWS’s Integrated Waste Management Delivery Team. This will cover the entire waste management lifecycle, including topic areas such as waste culture, knowledge management, sustainability, strategy and business case and underpinning technical support.
NWS is part of the NDA group, which has a collective long-term mission to clean up nuclear sites safely, securely, and cost-effectively. The NDA is a non-departmental public body created by the Energy Act 2004 to lead the clean-up and decommissioning work at 17 sites on behalf of government. It’s sponsored and funded by the Department for Energy, Security and Net Zero (DESNZ).
The Nuclear Decommissioning Authority established the Integrated Waste Management Programme to ensure waste is managed in a more integrated way, from waste generation to disposal, removing barriers and promoting value-based decision making.
About Amentum
Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, we have more than 53,000 employees in approximately 80 countries across all 7 continents.
Visit us at www.amentum.com to learn how we advance the future together.
With more than 6,000 people in the UK, Amentum is the delivery partner for programme, project and construction management services at Hinkley Point C; sole program and project management delivery partner at Sizewell C; and also supports the UK’s existing nuclear power stations under a Lifetime Enterprise Agreement with EDF. It is a major supplier of engineering design, safety case and project management at Sellafield and other UK nuclear decommissioning sites and operates the country’s largest private sector complex of nuclear laboratories and engineering test facilities in Warrington.
In the defence sector, Amentum has an essential role in the UK’s continuous at-sea deterrent by providing safety advice and technology services for the Royal Navy’s nuclear submarines and programme management and engineering support for AWE. Amentum’s specialist teams also assist procurement and operational delivery of goods and services across the whole of the UK Ministry of Defence.
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