Amentum Chief Executive Officer John Heller, who met U.S. President Donald Trump and Prime Minister Sir Keir Starmer at Chequers, said: “The U.S. State visit reflects the unique strength of the UK-U.S. partnership and our shared determination to drive economic growth and prosperity. The energy resilience and national security of both nations depend on continued leadership and advances in energy and technology – the focus of this visit. Commitments by both governments to back and invest in these industries help drive Amentum’s continued growth and investment in innovation, jobs and skills on both sides of the Atlantic.”
The company is a lead delivery partner for the UK’s new nuclear power stations at Hinkley Point C and Sizewell C. It also provides technical and project solutions for small modular reactors and fusion research, alongside services supporting the Royal Navy’s nuclear submarines and the UK’s Atomic Weapons Establishment.
Stronger UK-U.S. cooperation in nuclear industries is seen as essential to delivering capacity and skills to meet President Trump’s executive orders calling for a fourfold increase in nuclear generating capacity by 2050. “We are stepping up collaboration between our people on both sides of the Atlantic to ensure that we seize opportunities which are tailor-made for our company,” said Mark Whitney, President of Amentum Energy & Environment. “Based on current demand projections, we expect to increase our UK headcount by 50% over the next four years. And we are also investing in digital engineering, AI, and automation to improve the delivery of critical infrastructure and government programmes in the UK and the U.S.”
Amentum also manages and maintains the UK training estate for the Defence Infrastructure Organisation. The company said its growing role in both nuclear and defence sectors underscores its commitment to supporting critical national programmes.
