HSE Engineered Stone Crackdown | First Firms Ordered to Stop Work

Six weeks ago, the HSE told the engineered stone industry that dry cutting had to stop. This week we found out what happens to the businesses that didn't listen. The regulator has served its first prohibition notices under the campaign, ordering four companies to halt work with engineered stone immediately after inspectors found they had failed to control the dust putting their workers at risk of silicosis. It's the first hard evidence that the inspection programme has teeth — and a clear signal of what the other visits this year are likely to look like.

Key Takeaways

• HSE has served prohibition notices on four firms, ordering them to stop working with engineered stone immediately.
• The notices followed inspections that found a lack of controls to protect workers from respirable crystalline silica (RCS).
• The enforcement is part of a nationwide campaign of more than 1,000 planned inspections running through 2026/27.
• Failures went beyond dust control, spanning health surveillance, RPE, local exhaust ventilation and machinery guarding.
• The four firms have not yet been named; HSE publishes notice details around five weeks after service to allow for appeals.

What Has HSE Actually Done This Week?

HSE inspectors have served prohibition notices on four separate companies working with engineered stone. A prohibition notice is not a warning or a fine — it is a legal instruction to stop a specific activity immediately because, in the inspector's judgement, it carries a risk of serious personal injury. Work cannot resume until the failings are put right.

In each case, HSE found the same underlying problem: the business did not have adequate controls in place to protect its workers from silica dust. These are the first enforcement actions to come out of the inspection campaign HSE launched in May, and they were served by the end of that month. If you run or advise a fabrication business, this is the moment the campaign stopped being an announcement and started being a consequence.

Why Were These Firms Stopped?

The headline failure was dust control — the thing the May guidance was written to address. But the notices didn't stop there. Alongside the silica exposure, HSE's inspectors flagged a familiar cluster of failings:

• Health surveillance — no proper system to catch lung damage early in workers who are exposed.
• Respiratory protective equipment (RPE) — either not provided, not suitable, or not properly used.
• Local exhaust ventilation (LEV) — the extraction that should be capturing dust at source.
• Machinery guarding — a reminder that a site cutting corners on dust is rarely cutting corners on dust alone.

That last point is the one I'd underline for anyone reading this as a fabricator or a duty-holder. When an inspector walks in and finds no dust control, they very rarely find a business that has everything else buttoned up. Poor control tends to travel in a pack. The engineered stone campaign is the reason inspectors are through the door, but they enforce on everything they see once they're inside.

What Is HSE Actually Enforcing Against?

This is worth being precise about, because there's a lot of loose talk about an engineered stone “ban”. There isn't one. What HSE published in May was COSHH guidance, not new legislation, and Australia's outright import ban has no equivalent on the UK statute book. The minister confirmed to Parliament this month that there are no plans for one.

So, what stopped these four firms? Existing law. The Control of Substances Hazardous to Health Regulations already require employers to prevent or adequately control exposure to hazardous substances, and RCS is squarely one of them. The May guidance simply made the standard explicit: dry cutting engineered stone is not an acceptable way to meet that duty, and water suppression is. When an inspector finds a business dry cutting with no meaningful controls, they don't need a new law to act — they have COSHH, and a prohibition notice, and they're using both.

What Does This Mean for Employers Now?

If you work with engineered stone, the four controls HSE set out in May are the standard you'll be measured against when — not if — an inspector visit:

• Switch to low-silica stone. Lower-silica engineered stone is available at equivalent quality, which removes the “the product needs to be high-silica” defence entirely.
• Use on-tool water suppression and control mist. This is the practical replacement for dry cutting, and it's the benchmark HSE now expects.
• Provide suitable RPE. Correctly specified, correctly fitted, and actually worn — not a box of dust masks in a cupboard.
• Carry out health surveillance. Regular checks so that if something is going wrong in someone's lungs, you find it early rather than at a post-mortem.

None of this is new, and none of it is unreasonable. The businesses that were stopped this week weren't caught out by an ambush — they had six weeks of clear, published guidance and chose not to act on it. The ones that read the May announcement and got their controls in order have nothing to fear from a visit. That's the whole point of the campaign: it rewards the operators who were already doing this properly and closes the gap on the ones who weren't.

How Many More Notices Are Coming?

Four is just the opening. HSE has committed to more than 1,000 inspections of fabricators across Great Britain, running through the 2026/27 period. Four notices by the end of May, from the very first tranche of visits, tells you the strike rate is not going to be zero. If a fabrication business is still dry cutting, or still running without health surveillance and proper RPE, the question is no longer whether an inspector will find it — it's when.

The names of these first four firms aren't public yet. HSE publishes notice details roughly five weeks after they're served, partly to allow for the appeals process. But the lesson doesn't depend on the names. The controls are known, the guidance is published, and the enforcement has started. There is no longer any version of this where a business can claim it didn't see it coming.

Frequently Asked Questions

What Is a Prohibition Notice?

A prohibition notice is an enforcement action served by an HSE inspector that requires a specific work activity to stop immediately, because the inspector believes it involves a risk of serious personal injury. Work cannot restart until the identified failings are corrected.

Has Engineered Stone Been Banned in the UK?

No. Unlike Australia, the UK has not banned engineered stone. HSE published COSHH guidance in May 2026 making clear that dry cutting is unacceptable, and it enforces existing dust-control duties under the COSHH Regulations. The government has confirmed there are no current plans for an outright ban.

Why Is Engineered Stone So Dangerous?

Engineered stone can contain up to 95% crystalline silica. Cutting it releases respirable crystalline silica (RCS), and HSE's research found dry fabrication produces RCS exposure five to ten times higher than wet methods. Inhaling RCS causes silicosis, an incurable and sometimes rapidly progressing lung disease that has killed young workers.

What Controls Do Employers Have to Put in Place?

HSE's guidance sets out four core controls: switch to low-silica engineered stone, use on-tool water suppression with mist control, provide suitable respiratory protective equipment, and carry out regular health surveillance.

When Will the Four Firms Be Named?

HSE typically publishes enforcement notice details around five weeks after they are served, to account for the appeals process and internal quality assurance. The four firms had not been publicly named at the time of writing.

How Many Inspections Will HSE Carry Out?

HSE has committed to more than 1,000 inspections of engineered stone fabricators across Great Britain, running through the 2026/27 period, with enforcement action taken against those failing to meet the required standards.

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