How to Dispose of Cooking Oil in London

Used cooking oil is one of the few kinds of household waste with no obvious home. It can’t go down the sink, most London councils won’t take it in the food caddy, and the recycling bin is out. So it ends up in a jar by the cooker for weeks. The answer is simple once you know it: let it cool, bottle it, and either take it to a recycling centre with a cooking oil bank or, if there isn’t one near you, seal it and put it in the general rubbish. This guide covers which London recycling centres accept cooking oil, what your council’s caddy rules actually say, and why Thames Water keeps pulling fatbergs out of London’s sewers. It also covers restaurants, takeaways and cafés, where the rules are much stricter: the recycling centre is closed to you, oil must go to a registered waste carrier, and a blocked sewer can end in a prosecution. Finally, it explains what happens to the oil once it’s collected.

The Short Answer for Households

For a pan of oil after a fry-up or a roast, this is the whole routine:

• Let it cool completely. Hot oil melts plastic bottles and burns hands. Leave the pan on a back ring for an hour or two.
• Reuse it if you can. Oil used once for chips or tempura can be strained through a sieve lined with kitchen paper and kept in a sealed bottle for the next fry. Throw it out once it smells rancid or has gone dark and thick.
• Bottle what’s left. Funnel it into the oil’s original bottle or any plastic or glass bottle with a screw cap. Keep topping the same bottle up until it’s full.
• Take full bottles to a recycling centre that has a cooking oil container (see the London list below).
• No recycling centre within reach? Put the bottle, sealed, in your general rubbish bin. This is what North London Waste Authority itself recommends when you can’t get to a site.

For the thin film left in a frying pan or roasting tin, wipe it out with kitchen paper and put the paper in the general bin before you wash up. Solid fats – lard, dripping, the layer that sets on top of a cooled stock – can be scraped straight into the bin. Thames Water’s own advice is the same: scrape fats and oils into the bin before the pan goes anywhere near the sink.

Why the Sink Is Never the Answer

Oil poured down a sink is liquid for the first few metres of pipe. As it cools it sets, clings to the pipe wall and catches everything else that passes: food scraps, coffee grounds and, further down the network, wet wipes flushed from toilets. That is how a fatberg grows.

London has had the most famous ones. The Whitechapel fatberg found in September 2017 was over 250 metres long and weighed an estimated 130 tonnes, mostly cooking fat and wet wipes; a slice of it went on display at the Museum of London. In December 2025 Thames Water found its ‘grandchild’ in the same part of east London: around 100 metres long and about 100 tonnes. In March 2026 crews cleared a fatberg blocking roughly 500 metres of sewer near Heathrow.

Thames Water’s figures show the scale:

• fats, oils and grease cause more than 20,000 blockages a year across its network – 28% of all sewer blockages;
• they are behind more than 60% of sewer flooding incidents, and are the leading cause of sewage flooding inside homes;
• in its own 2025 survey of adults in London and the surrounding counties, 26% admitted pouring oil down the sink.

Running the hot tap afterwards doesn’t help. Thames Water warns that boiling water or bleach only moves the problem further down the pipe, where it sets anyway – sometimes still inside your own pipework, which is yours to clear.

Which London Recycling Centres Take Cooking Oil

Many London reuse and recycling centres have a container for household cooking oil, separate from the engine oil bank. Two of the joint waste authorities state it clearly:

• North London (Barnet, Camden, Enfield, Hackney, Haringey, Islington and Waltham Forest) – North London Waste Authority says cooking oil can be taken to any of its reuse and recycling centres, including Summers Lane, Regis Road, Western Road and Kings Road. One exception: it is not accepted in the pedestrian zone at Hornsey Street, so you need to arrive by car.
• Wandsworth, Lambeth, Hammersmith & Fulham and Kensington & Chelsea – Western Riverside Waste Authority takes cooking oil at the Smugglers Way centre in Wandsworth. Lambeth residents can also take it to the Vale Street site.

Elsewhere in London, check the A–Z on your own council’s website before you set off – it is the only reliable source, and the lists do change. Three things to know before you go:

• Book a slot. Many London sites now need a booking and proof of address; our recycling centre booking guide covers each borough’s rules.
• Use the right container. Never pour cooking oil into the engine oil bank. The Food Standards Agency warns that cooking oil makes the whole container of engine oil unsuitable for recycling.
• Household oil only. Recycling centres are for residents’ own waste. Oil from a restaurant, café or takeaway isn’t accepted (more on that below).

Saving bottles up and taking them in one trip with everything else for the tip is the sensible approach; see our guide to London’s rubbish tips for what else they accept.

The Food Caddy and the General Bin

It feels as if oil should go with food waste. In London it usually can’t, at least not as a liquid. North London Waste Authority says liquid oil cannot go into the food waste bin, and the City of London tells residents not to put liquid, oil or liquid fat in the caddy – it makes a mess and makes the caddy far more likely to smell.

Councils differ on the small stuff – greasy kitchen paper, a little fat soaked into leftover bread – so check your borough’s caddy list. Our guide to the new household recycling rules explains what goes in each bin.

The general rubbish bin is the fallback, and a legitimate one, as long as the oil is sealed:

• use a bottle or jar with a screw lid, not an open tub or a carrier bag;
• for small amounts, let them set in the fridge and scrape the solid into the bin;
• if you live in a flat with communal bins, wrap the bottle in a bag as well – a split bottle in a chute or bin store is a slip hazard and a magnet for rats and foxes.

Restaurants, Takeaways and Cafés: What the Law Says

Once oil comes out of a commercial fryer it is business waste, and the household options above are closed to you. Government guidance for food businesses is direct: store it so none can spill, never pour it into a drain or sewer, and have it collected by a registered waste carrier who takes it to an authorised site. You could be fined or prosecuted if you dispose of it unsafely. Household recycling centres are not for commercial waste, and a general waste contractor will usually refuse bins with liquid oil in them.

The rules that apply:

• Water Industry Act 1991, section 111 – it is an offence to discharge anything into a public sewer, or a drain connected to one, that is likely to damage it or interfere with the flow of its contents. Fat, oil and grease are exactly that. The penalty is a fine, and on conviction in the Crown Court up to two years’ imprisonment.
• Duty of care (Environmental Protection Act 1990, section 34) – you must give the oil only to an authorised carrier and keep a waste transfer note for each collection for two years. For regular collections a season ticket can cover up to a year of transfers.
• Animal by-products rules – used cooking oil from catering can’t be sold or given away as animal feed or as an ingredient in it; doing so is an offence.

Thames Water enforces the sewer side in London. Its network protection team made more than 19,000 visits to food businesses across London and the Thames Valley in a year, and the programme has led to more than 2,500 fat traps being fitted. Food businesses are expected to have effective grease management in place, and a fat trap that has been bypassed or is never emptied doesn’t count. Thames Water has prosecuted three businesses in the past five years, with fines and costs of over £50,000 between them. One was a Fulham takeaway that had poured fat, oil and grease into the sewer for more than seven years; it did have a grease trap, fitted in 2018, but never maintained it. In April 2025 Reading Magistrates’ Court ordered it to pay more than £13,000 in fines and costs.

Used cooking oil is classed as non-hazardous waste (code 20 01 25, edible oil and fat), which is what should appear on your transfer note. Before anyone takes your oil, check their licence on the Environment Agency’s public register of waste carriers. A ‘collector’ who pays cash and leaves no paperwork leaves the liability with you.

Fryer Oil, Grease Traps and Engine Oil: Three Different Collections

Kitchens often assume one contractor takes ‘the oil’. In practice there are three separate waste streams:

• Fryer oil and liquid fats – vegetable oils such as sunflower, rapeseed and palm, and animal fats such as beef dripping. This is what a cooking oil collection is for. Our cooking oil collection supplies sealed containers and swaps them on a schedule set by how much oil you use – weekly, fortnightly, monthly, bi-monthly or on demand – across all 32 London boroughs, with a waste transfer note for every collection.
• Grease trap contents – the fat and food solids caught in an under-sink or below-floor trap. This is a different material, and we can’t take it in a cooking oil collection; it goes with the trap’s servicing contractor. Plate scrapings and kitchen food waste belong in a separate food waste collection.
• Engine, gearbox and hydraulic oil – mineral oil from vans, generators or workshops. It is hazardous waste and must never be mixed with cooking oil. See our waste oil collection.

Our cooking oil service is built around kitchens that produce oil every week, from single takeaways to hotel kitchens, school canteens and hospitals. For a few bottles from a home kitchen, the recycling centre is the right answer and costs nothing.

What Happens to Used Cooking Oil After Collection

Collected cooking oil is valuable because it can be turned into fuel. At a licensed processing site it is filtered to remove food particles and water, then refined into biodiesel, a replacement for fossil diesel. Oil from our commercial collections goes down this route.

Household oil follows the same path. North London Waste Authority says the oil left at its recycling centres is processed in Norfolk and made into biofuel for the distribution and power-generation industries.

What spoils it is contamination. Oil that has been through a sewer is mixed with wipes and sewage, and oil poured into an engine oil bank ruins the whole container. Oil that is bottled at home or collected straight from a kitchen fryer is clean enough to process. That is the reason to keep it out of the drain, out of the food caddy and away from the engine oil bank.