April 24 2026
If you sell food in the UK, whether that is baked goods at a farmers market, meal prep kits shipped to doorsteps or artisan products sold through independent shops, your packaging choices matter more than they used to. Customers want to know that the container holding their food is not going to sit in landfill for decades. Retailers are asking suppliers about their packaging credentials. And legislation is nudging the whole industry away from single-use plastic.
Biodegradable food packaging sounds like the obvious answer. But the reality is more nuanced than the marketing suggests. Not all biodegradable materials break down in the same way, not all of them are suitable for food contact, and not all of them are available at a price that makes sense for small producers.
This guide looks at what biodegradable food packaging actually is, what options are available in the UK right now, what they cost and how to choose the right one for your specific products.
A material is biodegradable if it can be broken down by bacteria, fungi or other biological processes into natural substances like water, carbon dioxide and biomass. The important detail is the timeframe and conditions required.
Some materials biodegrade in a home compost bin within a few months. Others need the high temperatures and controlled conditions of an industrial composting facility to break down properly. And some materials labelled “biodegradable” will technically decompose over time, but that time might be measured in years rather than weeks.
For food packaging specifically, you also need to consider food safety. The material needs to be approved for direct food contact, which means it has been tested to ensure it does not leach harmful chemicals into the food it holds.
These terms get used interchangeably, but they are not the same thing.
Biodegradable means the material will eventually break down through natural processes. It does not specify how long that takes or what conditions are needed.
Compostable is a more specific standard. In the UK and EU, packaging labelled as compostable should meet the EN 13432 standard, which requires it to break down within 12 weeks in an industrial composting facility. Home compostable certification (such as TUV OK Compost HOME) is a higher bar, meaning it breaks down in a standard garden compost heap.
Recyclable means the material can be reprocessed into new products through existing recycling infrastructure. Corrugated cardboard, for example, is one of the most recyclable materials available and is processed by virtually every UK council.
Understanding these distinctions helps you make informed decisions rather than relying on vague green claims from suppliers.
Here are the materials most commonly used in the UK market, along with their strengths and limitations.
Plain brown kraft cardboard is made from wood pulp and is fully biodegradable. It breaks down in soil, in compost and in recycling facilities. For food products that do not need a moisture barrier, kraft cardboard is one of the most practical and affordable choices.
Corrugated cardboard boxes are widely used for shipping food products. They are strong enough to protect goods during transit, lightweight enough to keep postage costs reasonable and recyclable at kerbside. If your food product is already sealed in an inner wrapper, a corrugated outer box is a solid choice for shipping.
At Boxtopia, we manufacture custom-sized corrugated boxes in the UK. Every box is made from FSC-certified board, and because we make them to your exact dimensions, there is no wasted space or unnecessary material.
PLA is a plant-based plastic derived from corn starch or sugarcane. It looks and feels like conventional plastic but is industrially compostable. PLA is commonly used for clear food containers, cups and deli tubs.
The catch is that PLA needs industrial composting conditions to break down. It will not decompose in a home compost bin or in landfill in any meaningful timeframe. And because it looks like plastic, it often gets put in the wrong recycling bin, contaminating conventional plastic recycling streams.
PLA works well if your customers have access to food waste collection that goes to industrial composting. In many urban areas of the UK, this is now available, but coverage is not universal.
Bagasse is a by-product of sugar production. It is moulded into containers, plates, bowls and clamshell boxes. It is sturdy, handles heat reasonably well and is both biodegradable and compostable.
Bagasse is popular with street food vendors, takeaway shops and catering companies. It is more expensive than polystyrene but significantly better for the environment. It composts at home and in industrial facilities.
Similar to bagasse in appearance, moulded fibre packaging is made from recycled paper pulp. It is used for egg cartons, fruit trays and food containers. It is fully recyclable and biodegradable.
The downside is that moulded fibre does not handle liquids well without an additional coating, and adding a coating can affect its compostability. For dry or semi-dry food products, it works well.
Paper or card coated with a thin layer of natural wax (beeswax or plant-based wax) provides a moisture barrier while remaining biodegradable. It is used for wrapping cheese, baked goods and sandwiches.
Wax-coated materials are not recyclable through standard paper recycling because the wax contaminates the process. However, they are biodegradable and home compostable, making them a good option for direct food contact applications.
Cost is the question that stops many small food businesses from making the switch. Here is a realistic picture.
Biodegradable options are generally more expensive than their conventional counterparts, but the gap has narrowed significantly over the past few years as demand has increased and production has scaled up.
Kraft cardboard and corrugated boxes are often comparable in price to standard packaging, especially when you factor in the cost savings from right-sizing. A custom-sized corrugated box from Boxtopia, for example, can be cheaper overall than an oversized standard box plus void fill plus excess postage.
PLA containers typically cost 10 to 30 percent more than equivalent plastic containers. Bagasse clamshells and bowls are around 15 to 25 percent more than polystyrene. These premiums are real, but they need to be weighed against the marketing value of sustainable packaging, potential savings on the Plastic Packaging Tax and the growing risk of customer backlash against unnecessary plastic.
For small businesses, the most cost-effective approach is often a combination: corrugated cardboard for shipping, kraft paper for wrapping, and biodegradable inner containers only where direct food contact requires them.
The right choice depends on your product, your customer base and your operations.
Does it need a moisture barrier? Does it need to handle heat? Is it liquid, solid or somewhere in between? A baked good in a kraft paper bag has very different packaging needs from a chilled meal kit in a sealed container.
What will your customer actually do with the packaging? If most of your customers live in urban areas with food waste collection, industrially compostable packaging makes sense. If your customers are more likely to put packaging in their recycling bin, then recyclable cardboard is the smarter choice.
Any packaging that comes into direct contact with food must comply with UK food contact material regulations. Make sure your supplier can provide the relevant compliance documentation. Reputable suppliers will have this readily available.
If overhauling your entire packaging range feels overwhelming, start with the outer packaging. Switching from a generic plastic mailer to a custom-sized corrugated cardboard box is a straightforward change that reduces waste, improves protection and looks better when the customer opens it.
Biodegradable food packaging does not need to be complicated or prohibitively expensive. The most practical approach for most UK food businesses is to start with the simplest changes first.
Switch your shipping boxes to right-sized corrugated cardboard. Replace plastic tape with paper tape. Swap polystyrene chips for shredded kraft paper. These changes are affordable, immediately visible to customers and genuinely better for the environment.
For the inner packaging that touches the food itself, take the time to research which material genuinely suits your product and your customers’ disposal options. Avoid choosing packaging based purely on marketing claims. Ask your supplier for certification documentation and real-world disposal guidance.
If you need custom cardboard boxes for shipping your food products, we can help. Boxtopia makes boxes to your exact size specifications, with no minimum order, FSC certification and free UK delivery on every order.
Even the best biodegradable packaging loses its environmental value if customers throw it in the wrong bin. Clear disposal instructions on your packaging make a real difference. A simple line like “This box is 100% recyclable – please flatten and recycle” removes any guesswork. If your inner packaging is compostable, say so and specify whether it needs industrial composting or works in a home compost bin. The clearer you are, the more likely your packaging actually gets disposed of correctly. Some brands print a small diagram showing which bin each component belongs in. This costs almost nothing to add but significantly improves your real-world environmental impact.
