Amentum has joined Babcock International Group’s five-year Engineering Services Framework, positioning the company to support nuclear, marine, land, aviation and mission systems for the UK Armed Forces in the UK and overseas.
The framework is designed to forge longer-term partnerships with key suppliers while simplifying and speeding the route for bringing specialist engineering expertise into major defence programs. It allows suppliers to move more quickly across multiple projects, improving procurement efficiency and collaboration.
The award builds on Amentum’s long-running infrastructure support at Devonport Royal Dockyard, His Majesty’s Naval Base Clyde and the Rosyth Royal Dockyard. It paves the way for continued and future work on critical UK defence and submarine programs, alongside wider platform and infrastructure support across the nuclear, marine, land and air domains.
“Our decades of naval nuclear infrastructure experience, the breadth and depth of our engineering and architectural skills, together with our unrivalled scientific reach back, makes Amentum a one-stop shop for Babcock’s engineering, nuclear and technical requirements,” said Loren Jones, senior vice president and head of Amentum’s Energy & Environment-International business. “We are looking forward to supporting the delivery of programmes vital to the UK’s safety and security in the years ahead, deploying our proven experience of modernizing the UK’s naval bases, dockyards and defence systems, including specialized technical validation for critical infrastructure such as docks, berths and shiplifts for the maintenance of Astute and Dreadnought-class submarines, and for the wider Royal Navy fleet.”
Amentum’s offerings span program, project and engineering solutions, including requirements management; architectural design and building services; multi‑disciplinary design engineering across marine, civil and structural, electrical, control and instrumentation, and mechanical disciplines; and specialist support such as safety case authoring, Human Factors, 3D Building Information Modelling, geotechnical studies, seismic and blast assessment, and Independent Technical Assessment. The company also provides research and technology services, safety case and security support for the Royal Navy’s nuclear propulsion systems.
Globally, Amentum is headquartered in Chantilly, Virginia, with approximately 50,000 employees in more than 70 countries. In the UK, the company employs more than 6,000 people and serves as delivery partner for project and construction management at Hinkley Point C, sole program and project management delivery partner at Sizewell C, and supports 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 nuclear decommissioning sites, and operates a large private‑sector complex of nuclear laboratories and engineering test facilities in Warrington.
In defence, Amentum provides safety advice and technology services for the Royal Navy’s nuclear submarines in support of the UK’s continuous at‑sea deterrent, delivers program management and engineering support for AWE, and assists procurement and operational delivery of goods and services across the Ministry of Defence.







