“Cracks are already beginning to show” in AUKUS funding, the chair of a UK parliamentary inquiry warned. The House of Commons defence committee, chaired by MP Tan Dhesi, said leadership failures and stop-start investment are threatening the AUKUS submarine programme and could delay delivery timetables that matter to Britain, the United States and Australia. The report singled out slow progress on shore facilities needed to build and sustain nuclear‑powered boats and warned the weakened investment pipeline raises questions for industrial plans in South Australia.

Inquiry finds gaps in leadership and funding - The cross-party House of Commons defence committee places responsibility on weak political direction and inconsistent investment, saying the AUKUS programme is behind schedule and that small funding shortfalls can magnify over time. - "We have deep concerns cracks are already beginning to show when it comes to funding," said Tan Dhesi, chair of the committee, warning that stops and starts in investment cannot continue. - The inquiry calls for firmer, more consistent leadership across the UK, US and Australia, quicker decisions and clearer delivery timetables for the shore infrastructure required to build and maintain nuclear-powered submarines. Where the programme stands - Interim and long-term plans: Australia will receive at least three US Virginia-class submarines as an interim measure while a jointly designed AUKUS-class fleet is developed by the UK and Australia. - Planned fleets: The UK has plans for up to 12 AUKUS-class boats for its own fleet; Australia has set out hopes for five vessels to be built in South Australia. - Infrastructure lag: The committee highlighted that factories, docks and maintenance facilities essential for nuclear-powered subs have fallen behind schedule. Those projects are foundational to shipbuilding and long-term sustainment. Implications for Australia’s defence and industry - South Australia’s role depends on a steady investment pipeline and timely delivery of docks, training facilities and maintenance yards; delays risk undermining local industrial plans. - Reduced or delayed spending in the UK or US will ripple through the trilateral schedule: if shore capacity is not ready when hulls and systems arrive, costs for holding incomplete vessels, extending interim arrangements, or paying for foreign maintenance will rise. - The committee warned that seemingly minor shortfalls and delays can snowball, producing potentially severe consequences for allied security and local supply chains.

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"The investment pipeline has already faltered. This cannot be allowed to happen again," said Tan Dhesi, chair of the House of Commons defence committee.

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