United Kingdom
Amentum combines programme, project and engineering experience with deep technical capabilities to solve complex challenges for major UK organisations in the energy and defence sectors.
Amentum is at the heart of the UK’s nuclear industry. We deliver complex major programmes including construction of new power stations, operational support and life extension for the existing fleet, and clean-up of the nuclear legacy.
We are leaders in reactor technology, conceptual design and engineering for new nuclear technologies including Generation IV advanced reactors, small modular reactors and fusion power.
In our work on decommissioning and remediation, we are a major supplier of engineering design, safety case and project management services at Sellafield and other major UK sites; and we operate the country’s largest private sector complex of nuclear laboratories and engineering test facilities.
In the defence sector, Amentum has an essential role in the UK’s continuous at-sea deterrent. We’re also active in naval infrastructure and shipbuilding, at the Atomic Weapons Establishment, and in procurement and operational delivery across the whole of the UK Ministry of Defence.
Military-Friendly Employer
Employees Based in the UK
Employees Globally
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Energy
Environment
Our Capabilities
Amentum has demonstrable expertise delivering complex programme and project management for UK Government major projects and infrastructure.
Infrastructure Delivery Partner
We safely operate facilities of national significance, injecting innovation that increases efficiency and effectiveness.
We understand the need to view projects wholistically – build, secure, operate, and integrate.
Nuclear Operations
Amentum UK possesses an innate knowledge of the UK’s national nuclear landscape, having been involved in the design and delivery of much of the UK Government’s nuclear waste strategy.
Facility Sustainment & Modernisation
Amentum leverages industry-leading expertise, processes, and technology to ensure the availability and reliability of our government and commercial clients’ vital equipment. Our innovative technology solutions, repeatable processes, and expertise ensure operational readiness and extend the life of facilities and equipment.
Engineering Management, Licensing & Commissioning
As majority partner responsible for the management and operation of the Low Level Waste Repository (LLWR) in the UK, Amentum resolved an urgent need to expand waste disposal capacity, avoiding delays to UK’s decommissioning activity.
Sourcing an alternative LLWR site would have been a lengthy process with an expected cost of over £2 billion.
Amentum’s strategy involved fostering a collaborative approach with the customer and regulator, ultimately delivering upgrades to existing facilities and construction of an additional vault to extend the facilities operational life by 100 years.
In addition Amentum provided an additional 10 waste disposal and treatment routes, which avoided a further £455m in disposal costs.
Decommissioning
Amentum has successfully decontaminated and decommissioned large scale, contaminated facilities. Our collaborative approach focuses on safe and accelerated delivery schedules based on lessons learned and continuous improvement. We are able to challenge existing processes to deliver improvements for our customers.
We are working across all the key sites that enable the UK’s continuous-at-sea deterrent (CASD) program, including HMNB Clyde, home base for the Royal Navy’s operational submarines; HMNB Devonport, the largest naval base in Western Europe, BAE Systems Maritime in Barrow-in-Furness, where the Royal Navy’s submarines are built, at Rolls-Royce Nuclear in Derby, where submarine reactors are manufactured, and the Atomic Weapons Establishment in Berkshire, which is responsible for nuclear warhead design and manufacturing.
Amentum employs more than 350 multi-disciplinary engineers and project delivery professionals supporting the submarines which deliver Operation Relentless, the longest-running military operation in the history of the Ministry of Defence.
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We specialize in the design, construction, commissioning, and operations of innovative solutions for the world’s most complex challenges. We’re positioned to deliver hydrogen technology through a series of demonstration projects to achieve a secure, resilient, and clean energy source by 2030. We’re eager to partner with you to build a clean, resilient, secure energy future.
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