In a glass cabinet at the King Edward Mine Museum near Redruth, a bright blue display for Cornish Lithium sits incongruously among Victorian machinery and sepia-toned mining uniforms. It is, in its way, an apt symbol of what is happening beneath England’s most westerly county: the return of mining to a landscape that lost it, and the complicated question of what that return will actually deliver.
Cornwall sits on one of Europe’s largest lithium deposits, a fact that has sent politicians into something approaching rapture. Boris Johnson called it the “Klondike of lithium” in 2021. Keir Starmer described critical minerals as “the backbone of modern life” last year. UK demand for lithium is projected to rise by 1,100% by 2035, driven by the government’s electric vehicle and battery storage ambitions. China controls roughly a quarter of global production and more than half of global processing capacity, and ministers are scrambling for alternatives. Cornwall, they hope, is part of the answer.
Three companies are attempting to make that ambition real. Geothermal Engineering Ltd produced Britain’s first commercial battery-grade lithium earlier this year — somewhat accidentally, as the firm’s chief operating officer Tony Wilson acknowledges. GEL’s primary business is geothermal energy: water is pumped five kilometres into naturally heated granite, brought back to near boiling point and driven through a turbine to generate enough electricity for 10,000 homes. The lithium is a byproduct extracted from the brine before the water is returned underground. “Our lithium concentrations are actually going up rather than going down,” Wilson says. GEL believes it can produce enough lithium carbonate to supply around 250,000 electric vehicles a year within a decade, and targets around 10,000 tonnes of annual lithium carbonate by 2030 — approximately a fifth of the government’s projected UK demand.
Cornish Lithium has been producing battery-grade samples through hard rock mining since late 2025 and targets a commercial plant by 2029. It projects a similar volume of output and 300 direct jobs over the 20-year lifespan of its Trelavour project, plus 800 during construction. The South Crofty tin mine — the UK’s last, closed in 1998 — is also being reopened to meet growing critical minerals demand.
The jobs question is the one that matters most to communities like Redruth, which ranks among England’s most deprived towns. In its Victorian heyday, mining employed 30% of men aged 15 to 69 in the area. The collapse, when it came, was devastating — cheaper foreign tin and copper flooded the market, and tens of thousands emigrated in the late 19th century, giving rise to the old saying that at the bottom of every hole in the world, you will find a Cornishman. Today the economy runs on seasonal tourism, daffodil picking and foodbanks. Younger people leave. “Mining is well-paid, well-qualified work,” says David Ager, chairman of the King Edward Mine Museum. “This gives young people an opportunity to make a living here.”
But the promise has already been punctured once. The most ambitious project on paper — a joint venture between British Lithium and French mining giant Imerys, sitting on one of the UK’s largest confirmed deposits near St Austell — was mothballed in February 2026 after Imerys pulled its funding. Global lithium prices had crashed more than 80% from their 2022 peak, driven by oversupply and slower-than-expected electric vehicle adoption. Between 40 and 70 employees were made redundant. The promised 300 jobs will likely not materialise.
There is a further structural constraint even for the projects that do proceed. Cornwall can produce raw lithium — but that is only the first step. The metal must be refined and processed into cathode active material before it enters a battery cell. China controls around 60% of that processing capacity, meaning Cornish lithium could still be shipped east for processing before returning as battery components. Green Lithium’s planned Teesside refinery, targeted for completion by 2029, is the only domestic answer currently on the horizon.
The Camborne School of Mines has relaunched its mining engineering degree at the University of Exeter, and early signs of workforce renewal are emerging. Wilson notes that staff are already working at GEL who would not otherwise be in Cornwall. A statue of a tin miner stands in the centre of Redruth, pick in one hand, ingot in the other. Whether a future statue will hold a battery and a bag of metallic powder remains uncertain. But the direction of travel, at least, has changed.
