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AUKUS Quietly Moving Ahead With Arrival of British Sub in Australia

By integrating industrial bases and operational practices, Australia and the U.K. are signalling that their partnership is not a relic of history but central to their contemporary strategies.

HMS Anson in transit to HMAS Stirling, February 22, 2026.

This week, HMAS Stirling – Australia’s key submarine base on Garden Island near Perth – hosted the historic arrival of the HMS Anson, the United Kingdom’s Royal Navy’s Astute-class nuclear-powered attack submarine, for an inaugural submarine maintenance period in Australian waters. 

This initial maintenance period is a component of the AUKUS agreement between Australia, the U.K., and the United States. The purpose of this initial visit is for Australian sailors, industry, and defense personnel to work side-by-side with their British and U.S. counterparts to familiarize Australia’s future submarine workforce with the demands of nuclear submarine operations and sustainment. 

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This week, HMAS Stirling – Australia’s key submarine base on Garden Island near Perth – hosted the historic arrival of the HMS Anson, the United Kingdom’s Royal Navy’s Astute-class nuclear-powered attack submarine, for an inaugural submarine maintenance period in Australian waters. 

This initial maintenance period is a component of the AUKUS agreement between Australia, the U.K., and the United States. The purpose of this initial visit is for Australian sailors, industry, and defense personnel to work side-by-side with their British and U.S. counterparts to familiarize Australia’s future submarine workforce with the demands of nuclear submarine operations and sustainment. 

The visit proved that among the noise and distraction from Washington, the AUKUS agreement is quietly moving along. It also highlighted the growing defense integration between Australia and the U.K.. The countries have always been incredibly close, despite the long distance between them, but AUKUS and the recently signed Geelong Treaty deepened recent integration.  

This was further reflected this week by the two countries formally reviving the Australia-U.K. Defense Industry Dialogue (AUKDID), which last occurred in 2018. The dialogue was chaired by Australia’s Minister for Defense Industry Pat Conroy and the U.K. Minister for Defense Readiness and Industry Luke Pollard. The ministers highlighted the need for closer industrial cooperation in a more challenging global security environment, emphasizing joint efforts to develop and sustain advanced military capabilities. 

Key areas of collaboration include advanced radar technology, directed-energy weapons, enhancing software-enabled planning systems, building resilient supply chains — including in critical minerals and munitions — and efforts to ease defense trade barriers such as mobility, security clearances, and cybersecurity standards. Alongside this, Australia also invited the U.K. to observe testing of its Ghost Bat drone aircraft. 

Taken together with the submarine visit, the relationship between the two countries is moving away from just being about shared heritage or diplomatic habits into the deliberate integration of capabilities. 

The Indo-Pacific’s strategic environment has hardened. China’s naval expansion and its growing capacity to project power across maritime Asia have forced Canberra to think of the relationship with the U.K. less in historical terms and more in terms of creating deterrence. The United Kingdom’s “Indo-Pacific tilt,” articulated in the 2021 Integrated Review and reaffirmed since, signals that London sees important strategic relevance in the region, even if concerns in Europe remain pressing. 

The trilateral AUKUS partnership provides the scaffolding for this shift. While much commentary has focused on the eventual acquisition of nuclear-powered submarines, AUKUS is as much about knitting together defense ecosystems as it is about boats in the water. The submarine component is the central pillar that other capability integration will radiate out from. 

The rotational presence of British and U.S. submarines in Australia before the arrival of the future SSN-AUKUS fleet is intended to transmit defense knowledge between the three countries, and in particular upgrade Australia’s skill set as it moves toward hosting, maintaining, and eventually operating nuclear-powered vessels of its own. The arrival of the HMS Anson is a symbolic beginning for the routines that will follow – engineers exchanging schematics, sailors learning procedures, new technical regulations being put into policy. 

The reason for this integration – and the web of new defense technology cooperation – is that hardware alone does not create deterrence. There needs to be the projection of coordination, a way of signaling to adversaries that alliances are strong and they have the habits of cooperation and interoperability to act in unison if necessary. 

The United Kingdom’s renewed engagement in the Indo-Pacific can often be dismissed as symbolic, but it is more about gaining reach through alliances. Through AUKUS and deepening bilateral industrial links with Australia, London is positioning itself within a networked security architecture that distributes burdens among capable partners.

For Australia, the calculus is equally pragmatic. Increasing its strategic autonomy as a middle power means deepening partnerships that can help lift its capabilities. While Australia continues to rely heavily on the U.S., broadening its integration with the U.K. reduces the dependency on Washington to uplift its capabilities.  

Of course, none of this guarantees stability in the Indo-Pacific, as this is just one component of a far more complex dynamic, with multiple other powerful forces. But by integrating industrial bases and operational practices, Australia and the U.K. are signaling that their partnership is not a relic of history but central to both countries’ contemporary strategy. 

Grant Wyeth is a Melbourne-based political analyst specializing in Australia and the Pacific, India and Canada.

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