UK to unveil £8.4bn nuclear submarine investment, boosting jobs

The prime minister is set to announce £8.4bn more for the UK’s nuclear submarine programme as he travels to Barrow-in-Furness, where four new Dreadnought-class submarines are being built. The government is pitching the money as both a security measure and a jobs package, with the wider programme linked to 47,000 jobs and apprenticeships.

The investment is designed to keep work flowing through one of Britain’s most important defence towns, where the submarine yard sits at the centre of the local economy. Andy Burnham said the ongoing spending on nuclear submarines would “protect Britain for decades to come”, while also supporting skilled work across the supply chain. The government has made clear that it wants the spending to be read as industrial policy as well as deterrence policy.

Barrow already has a defined role in the next phase of the fleet. The town is building four Dreadnought-class submarines, and the latest commitment comes after BAE Systems won a separate £5.9 billion contract to advance work on the UK’s next generation of nuclear-armed submarines. That contract, awarded by the British government, underlines how much of the programme’s value is being locked into long-term industrial work rather than one-off procurement.

The announcement also sits inside a broader push that began with the government’s March 2024 “national endeavour” to strengthen the UK’s nuclear deterrent. Earlier that year, Reuters reported that Britain planned to boost its nuclear workforce as submarine building and civil nuclear investment increased, a sign that officials were already trying to tie defence demand to training and recruitment. By 2025, the government’s Strategic Defence Review and Defence Industrial Strategy were both explicitly linking defence spending with growth.

Barrow’s future has been framed in similar terms. Team Barrow’s 10-year transformation plan was unveiled in 2025 by a partnership involving central government, Westmorland and Furness Council and BAE Systems, with the aim of making the town’s defence role a driver of wider regeneration. The House of Commons Defence Committee also said in a 2025 briefing that the SSN-AUKUS submarine programme is part of the trilateral UK-US-Australia partnership announced in 2021.

For taxpayers, the case being made is simple: the state is paying for strategic deterrence, but ministers want the return measured in apprenticeships, supply-chain work and a more durable industrial base in places such as Barrow. The political test is whether the next stage of submarine spending can deliver both at once.