Russia’s Submarine Push and Britain’s AUKUS Response

Over the past year the Royal Navy has been called out 116 times to shadow Russian warships and merchant vessels, tracking 61 warships in total. A month-long operation with Norway and other allies monitored a Russian submarine and two specialist vessels operating near the North Atlantic’s fibre-optic cables that carry about 99 % of Britain’s internet traffic. The article notes that Russia’s newest Yasen-M class is among the quietest ever built and carries Kalibr land-attack cruise missiles—the same weapons used in Ukraine since 2022. Moscow laid down the ninth Yasen-M boat in June, underscoring a continued expansion of a fleet that now includes more than two dozen nuclear-powered attack submarines.

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The Defence Investment Plan commits £47 billion to submarines within a ring-fenced nuclear budget of £63.6 billion over four years, providing long-term certainty for the programme. Under AUKUS, Rolls-Royce in Derby will produce complete nuclear propulsion units for both British and Australian submarines, with a major site expansion to double capacity. The first SSN-Aukus boat is slated to enter Royal Navy service in the late 2030s. At peak build-out, more than 21 000 people are expected to work on the SSN-Aukus programme in British shipyards, while the wider nuclear workforce is projected to grow by 40 000 by the end of the decade.

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Firms in 497 constituencies—from the South West and North West to Scotland, the Midlands and beyond—are part of the AUKUS supply chain. In Barrow, the submarine-building workforce has risen from around 12 000 to 14 000 in the past two years; at Rolls-Royce Derby, staff have increased from roughly 4 700 to 5 600 as capacity expands. Investment is also flowing into regeneration projects such as the Team Barrow partnership (new homes, upgraded schools, health and transport facilities) and into Devonport’s dockyard upgrades, spreading well-paid, skilled jobs across the country.

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The growing Russian submarine activity threatens critical under-sea infrastructure, including the cables and pipelines that underpin Britain’s energy and communications. Maintaining open North Atlantic sea lanes and the ability to locate and, if necessary, neutralise hostile submarines is central to NATO’s eastern-flank defence and to protecting the UK’s nuclear deterrent and carrier groups. AUKUS also strengthens broader defence ties—Britain is co-building a 13-ship fleet of submarine-hunting frigates with Norway and collaborating on next-generation combat aircraft with Italy and Japan—positioning the UK as a pivotal industrial and security partner for its allies.

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