November 4, 2025
SYDNEY, (Nov. 5, 2025) — At the Indo Pacific International Maritime Exposition in Sydney, HII (NYSE: HII) announced the addition of Westley Group, a leading United Kingdom-based manufacturer of high-integrity metal castings, as a strategic supplier supporting the U.S. Navy’s submarine industrial base.
This milestone marks another step forward in advancing allied defense 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 U.S. Navy, to deliver critical castings for U.S. 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.
Representatives from Newport News Shipbuilding and Westley Group, a United Kingdom-based manufacturer, marked the beginning of a new supplier partnership during the first day of the Indo Pacific International Maritime Expo in Sydney, Australia. The collaboration highlights Newport News Shipbuilding’s ongoing commitment to engaging with high-quality global partners to advance shipbuilding excellence.
Representatives from Newport News Shipbuilding and Westley Group, a United Kingdom-based manufacturer, marked the beginning of a new supplier partnership during the first day of the Indo Pacific International Maritime Expo in Sydney, Australia. The collaboration highlights Newport News Shipbuilding’s ongoing commitment to engaging with high-quality global partners to advance shipbuilding excellence.
Representatives from Newport News Shipbuilding and Westley Group, a United Kingdom-based manufacturer, marked the beginning of a new supplier partnership during the first day of the Indo Pacific International Maritime Expo in Sydney, Australia. The collaboration highlights Newport News Shipbuilding’s ongoing commitment to engaging with high-quality global partners to advance shipbuilding excellence.
About Westley Group
Westley Group has four vertically integrated manufacturing facilities in the U.K. Westley Group employs over 300 personnel and specializes in end-to-end production of sand and centrifugal castings, precision machining, non-destructive testing, and final assembly. Its comprehensive in-house capabilities ensure consistent quality, reduced lead times, and performance critical to mission success in defense applications.
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HII is America’s largest shipbuilder, delivering the world’s most powerful ships and all-domain mission technologies, including unmanned systems, to U.S. and allied defense customers. HII is the largest producer of unmanned underwater vehicles for the U.S. Navy and the world.
With a more than 140-year history of advancing U.S. national security, HII builds and integrates defense capabilities extending from the core fleet to C6ISR, AI/ML, EW and synthetic training. Headquartered in Virginia, HII’s workforce is 44,000 strong.
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