What Affects the Price of Used Cooking Oil? A Guide for UK Food Businesses

Why Used Cooking Oil Has Commercial Value

Used cooking oil isn't waste in the traditional sense — it's a commodity. Once collected and processed, it becomes the primary feedstock for biodiesel production, a renewable fuel used to power commercial vehicles and industrial machinery.

Under the Renewable Transport Fuel Obligation (RTFO), biodiesel derived from waste cooking oil carries double counting Renewable Transport Fuel Certificates (RTFCs). This makes it particularly valuable to fuel blenders, who need these certificates to meet government-mandated renewable fuel targets.

The result is a market where the demand for used cooking oil — and its price — is directly linked to global energy markets, government renewable fuel policy, and the price of virgin vegetable oils.

The Key Factors That Drive Price

1. Global vegetable oil commodity prices Used cooking oil prices track virgin vegetable oil markets — palm oil, rapeseed oil, and soybean oil in particular. When virgin oil prices rise, so does the value of used cooking oil as an alternative feedstock. When they fall, so does the price collectors can offer.

2. Biodiesel demand and RTFC values RTFC values fluctuate based on government policy, fuel blending targets, and overall renewable fuel demand. When RTFC values are high, processors can afford to pay more for feedstock — including used cooking oil.

3. Oil quality Higher-quality used oil commands a better price. Key quality factors include:

• Moisture content (water contamination reduces value)
• Free fatty acid (FFA) content — lower is better
• Solids and food debris contamination
• The type of oil (animal fats versus vegetable oils affect processing yields)

4. Collection volume Larger volumes justify the logistics of collection and create greater economies of scale. High-volume producers — food manufacturers, large restaurant groups, hotel chains — are more attractive to collectors and may receive payment rather than free collection.

5. Location Distance from processing facilities affects the economics of collection. Businesses in areas with good collector density and proximity to processing plants may be offered better terms.

Free Collection, or Payment for Your Oil?

The majority of UK food businesses — restaurants, takeaways, pubs, schools, care homes — produce volumes that qualify for free collection. The collector offsets their costs against the recycled product value, making free collection commercially viable for both parties.

Higher-volume producers — typically food manufacturers, large canteens, or multi-site operators producing several thousand litres per month — may be in a position to negotiate a payment for their used oil. This depends on:

• Consistent volume and quality
• Accessible collection points
• The current commodity price environment

Bio UK Fuels has been collecting and processing used cooking oil for 18 years. We'll give you a straight answer on what your volumes are worth in the current market.

Maintaining Oil Quality to Maximise Value

Whether you're receiving free collection or negotiating a payment, oil quality directly affects what you're offered. Here's how to maintain the best possible quality:

Filter regularly: Remove food debris from your fryer oil as part of your daily or weekly kitchen routine. Contaminated oil degrades faster and is worth less.

Keep containers dry: Water contamination is one of the most significant quality issues. Ensure collection containers are covered and stored away from rain or cleaning water.

Don't mix oil types unnecessarily: If you use multiple oil types, discuss with your collector whether they should be segregated. Some collectors prefer segregated loads.

Change oil on schedule: Heavily degraded oil — oil that has been used well beyond its productive life — has reduced value. Regular oil changes maintain quality and protect your food quality too.

Use the right containers: Bio UK Fuels provides purpose-built, sealed IBC tanks or drums at no charge. These are designed to minimise contamination and maintain oil quality between collections.

Getting the Best Arrangement for Your Business

The best way to understand what your used cooking oil is worth is to speak directly with a licensed collector who knows the current market.

Call Bio UK Fuels on 01709 373248 and tell us:

• Your business type and location
• How many fryers you operate
• Your estimated monthly oil output

We'll confirm whether you qualify for free collection, discuss whether a payment arrangement makes sense given current prices, and set up a compliant collection schedule — with Waste Transfer Notes as standard.

We hold Environment Agency waste carrier licence CBDU199369 and environmental permit EPR/GP3623PJ. All collections are fully compliant with the Environmental Protection Act 1990 and the Waste (England and Wales) Regulations 2011.

Frequently Asked Questions