Spill Kit Requirements in the UK: What the Law Actually Expects

The honest answer on spill kit requirements in the UK is that no single law says "you must have a spill kit," but several do require you to control spills, which in practice means having the right kit in the right place. If your site stores or handles oils, fuels or chemicals, duty-of-care and health-and-safety law expect you to prevent, contain and clean up spills. This guide covers the regulations that apply, the three types of kit, and how to size and position them so you are genuinely compliant, not just ticking a box.

Is a spill kit a legal requirement in the UK?

There is no standalone regulation mandating a spill kit by name. Instead, the obligation comes from a stack of laws that require you to manage the risk:

• Health and Safety at Work etc. Act 1974: the overarching duty to protect employees and others from workplace hazards, including slips and chemical exposure from spills.
• Control of Substances Hazardous to Health (COSHH) 2002: requires you to assess the risk of hazardous substances and put suitable control measures in place. If you store or use hazardous liquids, effective spill response equipment is part of that control.
• Environmental Protection Act 1990: imposes a duty of care over waste, which extends to spill clean-up. Note that contaminated absorbents are classified as hazardous waste and must be disposed of accordingly.
• Water Resources Act 1991: makes it an offence to allow polluting matter to enter watercourses or groundwater, so uncontained spills that reach a drain can carry serious penalties.

Put together, these mean a risk assessment that identifies a credible spill risk effectively obliges you to have a suitable kit and trained people to use it. The absence of a "spill kit law" is not a loophole. It is covered by duty of care.

Oil storage: the one with hard numbers

If you store oil or diesel, one rule does get specific. The Control of Pollution (Oil Storage) (England) Regulations 2001 require secondary containment for oil stored above 200 litres, typically a bunded tank or bund. That secondary containment must hold 110% of the largest container's capacity (or 25% of aggregate capacity for multiple containers, whichever is greater), sit on an impermeable base, and not be penetrated by drainage pipes. Similar provisions apply in the other UK nations. A spill kit sits alongside this as your response layer if oil escapes the bund during filling or a leak.

The three types of spill kit

Spill kits are colour-coded and formulated for different liquids. Using the wrong kit can make a spill worse, so match the kit to what you actually store.

Oil-only kits (usually white sorbents) absorb oils, fuels and hydrocarbons while repelling water. That makes them ideal for outdoor yards, fuel stores and any site where an oil spill could reach surface water. On the Dalton Safety range, our Oil-Only kits use biodegradable, plant-based sorbents, which is a strong choice for environmentally conscious sites. Browse them on our oil-only spill kits collection.

Maintenance / general-purpose kits (usually grey) absorb almost anything, including oils, water-based fluids and mild chemicals. These are the workhorse kit for workshops, factories and warehouses handling a mix of fluids.

Chemical / hazmat kits (usually yellow) are formulated for aggressive chemicals and solvents. If you store hazardous chemicals, this is the kit that keeps a spill from becoming a health and environmental incident.

How to size and site your spill kits

Two questions decide what you buy and where it goes.

Sizing: match the kit's absorbency capacity to your worst case scenario, not the average one. A useful rule of thumb: your kit should be able to absorb the largest single container you keep in that area. A workshop with 25-litre drums needs a different capacity from a yard with an IBC. Kits are rated by absorbency in litres, so size up rather than down.

Siting: a kit locked in a distant store is no use in the first few minutes, which is when it matters most. Environment Agency guidance recommends spill response equipment be readily accessible near potential spill sources. Position kits within easy reach of storage areas, decanting points, loading bays and machinery, keep them clearly signed, and make sure staff know where they are and how to use them.

Restocking: a spill kit is only compliant if it is complete. After any use, restock immediately with fresh absorbents so the kit is ready for the next incident. Keep replacement loose absorbents on hand so a used kit is never left empty.

Building a compliant spill response

Compliance is more than a box on a shelf. A defensible setup has four parts: a risk assessment that identifies where spills could happen; the right type and size of kit sited within reach of those points; staff trained to use it and to dispose of contaminated absorbents as hazardous waste; and a restocking routine so kits are always ready. Get those four right and you satisfy the duty-of-care and COSHH expectations that sit behind the "requirement".

FAQ

Is it a legal requirement to have a spill kit in the UK?

There is no single law that names spill kits, but COSHH 2002, the Environmental Protection Act 1990 and the Health and Safety at Work Act 1974 require you to control and clean up spills. If your risk assessment identifies a spill risk, having a suitable kit is effectively required.

What size spill kit do I need?

Size the kit to your largest credible spill. As a rule of thumb, it should absorb the largest single container stored in that area. Kits are rated by absorbency in litres, so choose one that comfortably exceeds your worst case rather than your average.

What are the three types of spill kit?

Oil-only kits (absorb oil, repel water), maintenance or general-purpose kits (absorb most liquids including oils and coolants) and chemical or hazmat kits (for acids, solvents and aggressive chemicals). Match the kit to the liquids you store.

Where should spill kits be located?

Within easy reach of spill sources: storage areas, decanting points, loading bays and machinery. Keep them clearly signed and known to staff. Environment Agency guidance recommends keeping response equipment readily accessible near potential spill points.

Get your site spill-ready. Explore the full spill control range at Dalton Safety, from oil-only kits to replacement absorbents, and make sure the right kit is within reach where you need it.