Ineos Mothballs Three Hull Chemical Plants as UK Gas Prices Double

Sir Jim Ratcliffe's Ineos has mothballed all three of its acetyls plants at Saltend Chemicals Park in Hull, with the chemicals giant pinning the shutdown squarely on natural gas prices that it says make British production uneconomic against American and Chinese rivals13. Two of the plants had already ceased production when the announcement was made, with the third due to go offline within days16. The facilities will sit idle "until further notice," and the company has set no timetable for a permanent closure decision11.

The proximate cause is a sharp spike in UK gas costs. Domestic natural gas prices have roughly doubled between July and September, recently touching their highest level since December 202217. That surge has been driven largely by the US-Israel war in Iran and disruption to oil and gas flows through the Strait of Hormuz17, the chokepoint through which a large share of global petroleum trade normally passes. For the energy-intensive chemicals sector, the episode shows how quickly a geopolitical shock in the crude oil market translates into wholesale gas costs — and then into concrete industrial decisions on the ground in Britain.

What the plants do — and why gas matters twice over

The three mothballed units produce acetic acid, acetic anhydride and ethyl acetate — commodity chemicals that feed into pharmaceuticals, clothing, cosmetics, detergents, paints, adhesives, construction materials and even military explosives59. Ineos says these are the last remaining world-scale acetyls operations in Europe, serving customers across the continent10.

The economics of these plants are unusually exposed to gas. Natural gas is not just the fuel that powers them; it is also a feedstock that enters the production process itself1215. So when the wholesale gas price spikes, input costs rise on two fronts simultaneously, and no amount of efficiency on the plant floor can close the gap.

That matters because Ineos insists these are not legacy assets. The company has invested heavily in upgrading the Hull site in recent years11, and completed a £30 million project in 2025 that switched part of the operation from natural gas to hydrogen, cutting carbon emissions by 75 per cent at that unit10. Ratcliffe, Ineos's founder and chairman, framed the irony bluntly: he says the company is being forced to mothball "some of the most efficient plants in Europe"115.

The arithmetic Ratcliffe wants everyone to see

The core of Ratcliffe's argument is a comparison. UK gas prices, he says, are now twelve times the level seen in the United States and eight times that of China, where production can run on cheaper coal15. On those numbers, the Hull plants simply cannot compete, regardless of their technical performance.

The billionaire industrialist did not stop at energy arithmetic. He accused the UK government's energy policy of delivering "economic vandalism on an industrial scale" — exporting jobs to China and the United States and, in his telling, driving up global emissions at the same time13. Replacement products supplied from the USA, he argued, come with roughly double the carbon emissions of the Hull-made equivalents, while Chinese production carries eight times the emissions2. His claim that net-zero policy is producing higher, not lower, global CO2 is the political barb embedded in an otherwise operational announcement.

It is a direct attack on the Labour government, and the Telegraph's framing — Ratcliffe "lashing out at Labour" — captures the intended political sting1. Ratcliffe has been a persistent critic of UK energy policy, and last year Ineos cut 60 jobs at Saltend, blaming the same pressures of high energy costs and cheaper imports9. The full mothballing suggests those earlier warnings were not posturing.

Jobs: the numbers and where the reporting diverges

The employment picture varies noticeably across the coverage, and the differences are worth unpacking. Most outlets report 245 people directly employed at the three affected sites115. Local reporting from Hull puts the Saltend site's direct headcount at around 30010. At the wider end, the Telegraph's lead suggests the Hull facilities employ "some 4,000 workers"1, while Ineos itself and the bulk of the coverage frame 4,000 as the number of jobs the plants support across the Humberside economy and supply chain, not direct payroll36.

A more granular version reported by Alliance News and The National holds that around 1,000 employees will be directly affected in total, of whom 245 work at the sites themselves, with a further 3,000 skilled jobs in Humberside facing knock-on impact1415. The most defensible reading, and the one consistent with Ineos's own statements, is that the site payroll is roughly 245-300, the immediate orbit is around 1,000, and the wider regional dependency — contractors, logistics, apprenticeship pipelines — approaches 4,000111014. Either way, for a region whose industrial identity is bound up with the Humber chemical cluster, the difference between mothballing and permanent closure is the difference between a wound and an amputation.

The government response, relayed by Hull Live, was notably measured: a spokesperson called it "a commercial decision from Ineos," acknowledged it would be a concerning time for Saltend workers and their families, and pointed to £350 million in support for strategically important chemicals producers, available on a co-investment basis4. That framing declines to accept the policy blame Ratcliffe assigns, while leaving a door open to the industry's wider argument about competitiveness.

The oil and gas angle behind the gas spike

The deeper story is how crude oil market turmoil has rebounded onto European gas. Reuters, via Global Banking and Finance Review, reports that European manufacturers have struggled against US and Chinese rivals since the energy crisis triggered by Russia's invasion of Ukraine, a squeeze compounded by the Middle East war138. Britain's specific exposure has now been sharpened by the conflict involving Iran and the disruption to tanker traffic through the Strait of Hormuz17.

The mechanism is straightforward. LNG and pipeline gas contracts are frequently priced against oil-linked benchmarks, and outright supply disruption in the Gulf tightens the global market for both crude and gas cargoes. When Hormuz flows are disrupted, Asian buyers compete harder for LNG, and European hub prices climb. That is precisely the July-to-September doubling UK prices have seen17. The Telegraph's report also notes the wider context of UK power costs, with domestic electricity in Great Britain at 33.2p per kWh in 2025 once supply, network, taxes, levies and VAT are counted, per IFS analysis — among the highest in the industrialised world2.

There is also a structural element the company's rhetoric glosses over. American producers enjoy cheap shale gas; Chinese producers can lean on coal. Europe, having lost cheap Russian pipeline volumes, now imports gas at globally competitive prices with carbon policy layered on top. That is not a Labour invention — it is the post-2022 reality for every energy-intensive industry on the continent. But the immediacy of the Hormuz disruption is what converted a chronic problem into an acute one.

What mothballing actually means

Mothballing is not closure. The plants are being idled and maintained in a state that allows restart, and Ineos has deliberately avoided announcing a timeline for permanent shutdown11. That ambiguity is both a hedge against gas prices normalising — if Hormuz flows stabilise and the July-September spike unwinds, the calculus could change — and a source of leverage in the political argument over energy policy.

The risk, of course, is that mothballed plants rarely come back easily. Customers redirect to US and Chinese suppliers, skilled operators move on, and the supply chain around Saltend thins. Ineos says its Hull units are Europe's last world-scale acetyls production; if they stay dark, European customers of these chemicals become importers by default, at exactly the carbon and security cost Ratcliffe describes102.

The reporting is consistent on the fundamentals: three plants, two already stopped, gas prices at a near-four-year high, and a furious chairman blaming Westminster. Where it diverges is on jobs arithmetic and on how much of this is geopolitics versus policy — the government says commercial decision, Ratcliffe says economic vandalism. The most credible synthesis is that both are true: the Hormuz-driven price spike lit the fuse, but the structure of UK energy costs built the bomb. For Humberside's 4,000-odd dependent jobs, that distinction matters less than whether anyone restarts the furnaces.