Most kitchen owners know they are supposed to have “paperwork” for their waste cooking oil. Far fewer know exactly what the law asks for, and the first time it becomes urgent is usually the morning an environmental health officer walks in. Here is the short, practical version for takeaways, restaurants and commercial kitchens in England.
Is used cooking oil classed as commercial waste?
Yes. Used cooking oil produced by a business is commercial waste, and it is regulated as such. It is not hazardous waste in normal catering use, but that distinction does not reduce your obligations. It still has to be stored properly, transferred only to an authorised person, and documented.
This catches out kitchens that think of waste oil as a by-product rather than a waste stream. From the moment it comes out of the fryer, it sits inside the same legal framework as the rest of your commercial waste.
Your duty of care under section 34
Under section 34 of the Environmental Protection Act 1990, and the Environmental Protection (Duty of Care) Regulations 1991, any business that produces waste has a legal duty of care over it. That duty does not stop at your back door. It follows the waste until it reaches a lawful destination.
In practice it means three things:
- Store it properly so it cannot escape, leak or be taken.
- Transfer it only to an authorised person, which for used cooking oil means a registered waste carrier.
- Be able to prove where it went, with a written record.
That third point is the one that causes trouble. If your collector fly-tips your oil or feeds it into an illegitimate supply chain, the fact that you paid someone to take it away is not, by itself, a defence. A regulator will ask what steps you took to satisfy yourself that your carrier was legitimate. “A man in a van has been coming for years” is not a good answer.
How to check your waste carrier is registered
Anyone transporting waste as a business must be registered with the Environment Agency as a waste carrier. Verifying that registration is part of your duty of care.
You can search the Environment Agency public register free of charge. Ask your collector for their registration number, then check that three things match what you were told:
- The registration number itself, in the format CBDU followed by digits.
- The registered company name, which should match the business invoicing you.
- The tier. Upper tier registration covers carriers and dealers, which is what a company buying and moving used cooking oil should hold.
Two minutes on that register is the cheapest compliance work you will ever do. If a collector is reluctant to give you a number, treat that reluctance as your answer and find someone else.
Waste transfer notes: what they must show
Every load of waste leaving your premises needs a waste transfer note. It is the document that proves the transfer happened and that it was lawful.
A note should record:
- Who transferred the waste and who received it, with addresses
- The waste carrier’s registration details
- A description of the waste, and the relevant waste classification code
- The quantity transferred
- The date and place of transfer
- Signatures from both parties
A blank slip with a scribbled signature does not meet this. Nor does a delivery-style docket that records nothing about the waste itself. If your current collector hands you something that would not satisfy the list above, you have a gap in your records whether or not anyone has noticed yet.
How long must you keep waste transfer notes?
At least two years. Both sides of the transfer must keep copies, and you must produce yours on request to the Environment Agency or your local authority. Failing to produce them when formally requested is itself an offence.
The problem is rarely that the collections never happened. It is that nobody can find the slips proving they did. A shoebox of fading thermal paper under the till technically satisfies the rule, right up until the day it does not.
Why used cooking oil must never go down the drain
Pouring waste oil into a sink, gully or drain is not a shortcut, it is a separate offence. Section 111 of the Water Industry Act 1991 prohibits discharging into a public sewer anything likely to damage the sewer or interfere with the free flow of its contents. Congealed fat does both.
The consequences are not abstract:
- Water companies pursue the source. Fat, oil and grease are the main ingredient in sewer blockages, and clearing costs have a habit of finding their way back to the premises the fat came from.
- Your own drains block first. A kitchen closed by a backed-up drain loses more in a weekend than a year of proper collections would ever cost.
- Councils take an interest. Repeat grease problems attract exactly the kind of attention no food business wants.
What about putting it in the general waste bin?
Also no. A drum of liquid oil in a bin lorry is a spill waiting to happen, and general waste is not a lawful route for this waste stream. Solidifying it or decanting it into bin bags does not fix the underlying problem, which is that the waste has not been transferred to an authorised person and no transfer note exists.
What inspectors actually ask for
In our experience the request is rarely complicated. An officer will typically ask to see:
- Your recent waste transfer notes, usually the last few months
- Evidence of who your carrier is, and often their registration number
- Where the oil is stored, and whether that storage is secure and away from drains
The kitchens that struggle are not the ones doing something wrong. They are the ones who cannot lay hands on the evidence that they are doing it right.
A five minute compliance check
Run through this today rather than during an unannounced visit:
- Find your collector’s waste carrier registration number and confirm it on the Environment Agency public register.
- Find your last three waste transfer notes. If you cannot locate them in five minutes, an inspector will not be able to either.
- Check the retention. Do you actually hold two full years of records?
- Check the detail. Does each note describe the waste and the quantity, or is it effectively blank?
- Look at your storage. Sealed containers, away from fire exits and drains? Our guide to storing used cooking oil safely covers what good looks like.
How we handle it
Every collection we make generates a digital waste transfer note stored in your online account, alongside the date and the litres collected. When someone asks for your waste documentation, you log in and download it rather than hunting through a drawer.
Our own registration is CBDU649455, upper tier, carrier and dealer, and our company number is 17353811. Please do check both. That is exactly what the public registers are for.
We collect from every London borough and the surrounding towns, with free sealed drums and cash paid per litre with no minimum volume.
This article is general guidance on waste law in England, not legal advice. If you need certainty about your own obligations, speak to your local authority or a qualified adviser.