Stanlow oil refinery under fire for repeated toxic chemical leaks

The spill situation

Real talk: the vibes around the Stanlow oil refinery in Cheshire are looking pretty rough. While it processes about 18% of the UK’s road fuel, recent reports are dropping major receipts showing the site leaked toxic chemicals—including benzene, cyanide, and heavy oils—into the Mersey Estuary and local waterways like Thornton Brook on dozens of occasions during 2023 and 2024.

Documents obtained by investigative journalists at SourceMaterial suggest the refinery exceeded its permitted pollution limits hundreds of times. In one wild instance, the Environment Agency (EA) noted that sulfur dioxide was released into the air at seven times the allowed level, while cyanide levels in waterways hit eight times the limit. It’s giving… environmental nightmare.

Why it matters to the locals

This isn't just about technical violations. The Mersey Estuary is a protected site home to endangered dolphins and rare bird species like the red-listed Dunlin. When a spill happened in September 2024—releasing over a tonne of oil—local cockle beds had to be shut down for five weeks while authorities ran safety tests. It lowkey messed with the income of local fishers, though they were eventually able to recover those losses.

The regulatory drama

It gets messier. While the EA is investigating, other regulators like Natural England (NE) dropped their own probe into the September 2024 incident, citing the belief that the refinery’s permit didn't actually set clear limits on how much oil could be spilled. James Wallace from the charity River Action called this out as a total L for accountability, noting that it makes you wonder if regulators are actually doing enough to stop these repeat offenses.

EET Fuels, which operates the site, says they take their responsibilities "extremely seriously" and claims the historical permit breaches don't reflect their current governance. Meanwhile, the company is already heading to court next month to be sentenced for earlier environmental law breaches from 2018 to 2020. Safe to say, the plot thickens.