HII welcomes UK’s Westley Group as a strategic supplier, strengthening global submarine supply chain under AUKUS Framework.
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Press Release, Sydney, 04 November 2025: At the Indo Pacific International Maritime Exposition in Sydney, HII announced the addition of Westley Group, a leading United Kingdom-based manufacturer of high-integrity metal castings, as a strategic supplier supporting the US Navy’s submarine industrial base.
This milestone marks another step forward in advancing allied defence collaboration under the AUKUS trilateral partnership between Australia, the United Kingdom, and the United States. Westley Group is now approved by HII’s Newport News Shipbuilding division, builder of nuclear-powered submarines and aircraft carriers for the US Navy, to deliver critical castings for US Navy platforms.
“Consistent with the need to have a more integrated supply chain, creating this new supplier that builds essential components adds to the incremental volume required to construct more submarines to meet national security needs,” said Matt Mulherin Jr., HII’s Newport News Shipbuilding division vice president of supply chain and strategic sourcing. “This benefits everyone in the partnership and is a key step toward strengthening and creating a more robust supplier network to meet the expanded need for nuclear-powered submarines.”
The partnership underscores HII’s commitment to expanding industrial integration across AUKUS nations and building a more resilient, globally connected supply chain to support submarine program execution. This collaboration highlights deepening industrial integration under the AUKUS framework and strengthens collective readiness across the trilateral partnership.
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