Plastic Pollution and the Scope 3 Blind Spot in Carbon Reporting
Plastic pollution is usually framed as a problem for oceans, rivers and landfill sites. For UK businesses, though, there’s a quieter version of the same problem sitting inside their carbon reporting: plastic packaging that never gets counted.
Most large organisations now report their Scope 1 and Scope 2 emissions as a matter of course. Far fewer report Scope 3, the category that covers emissions from purchased materials, supply chains and waste disposal, which is exactly where plastic packaging lives. That gap isn’t just an accounting quirk. It’s an opportunity for businesses that want their carbon reporting to reflect their actual environmental footprint, rather than the easiest third of it.
What SECR actually requires
Streamlined Energy and Carbon Reporting (SECR) is the UK framework that requires quoted companies (those listed on the London Stock Exchange’s main market, an EEA exchange, or the NYSE or NASDAQ; this doesn’t include AIM-listed companies, which are treated as unquoted) of any size, plus large unquoted companies and LLPs, to disclose their energy use and greenhouse gas emissions annually, through their Directors’ Report or an equivalent Energy and Carbon Report.
Under the government’s environmental reporting guidance, the requirements differ depending on emissions scope:
- Scope 1 (direct emissions from owned or controlled sources) and Scope 2 (indirect emissions from purchased electricity, heat, steam or cooling) are mandatory for all organisations in scope of SECR.
- Scope 3 (indirect emissions from sources you don’t own or control, including purchased materials, transport and waste disposal) is voluntary for quoted companies, though the guidance describes it as “strongly encouraged, especially where this is a material source of emissions”. For large unquoted companies and LLPs, only business travel emissions from rental or employee-owned vehicles are mandatory within Scope 3; everything else, including materials and waste, remains voluntary but encouraged in the same terms.
In other words, the law asks for the emissions a business generates directly and through its energy purchases. It doesn’t require a business to account for the plastic packaging it buys in, ships out or disposes of, even though that packaging carries a real carbon cost from extraction through to disposal.
Where plastic packaging sits in Scope 3
The government’s own reporting template sets out the specific Scope 3 categories organisations are encouraged to disclose. Several map directly onto plastic packaging:
- Emissions from the extraction and production of purchased materials, which would include virgin or recycled plastics bought in for packaging.
- Emissions from the transportation of purchased materials or goods.
- Emissions from the disposal of waste generated in operations, covering packaging waste leaving your own site.
- Emissions from the disposal of sold products at the end of their life, relevant if your packaging travels with the product to the customer.
These are all categories that exist within the official SECR reporting template as optional, voluntary disclosures. A business that packages its products in plastic is, in practice, choosing not to report against categories that are already there and already designed to capture exactly that impact.
Why this is worth doing voluntarily
It’s worth being clear about what this isn’t. It isn’t the same as Extended Producer Responsibility (EPR) for packaging, the separate, mandatory fee scheme administered by PackUK, which charges businesses based on the volume and recyclability of the packaging they place on the market. EPR is about who pays for packaging waste management. Scope 3 reporting is about who accounts for the carbon.
The two are easy to conflate, but a business could be fully compliant with EPR fees and still have a significant, unreported blind spot in its emissions data. That distinction matters, because it means voluntary Scope 3 reporting isn’t a compliance box left unticked, it’s a genuine choice about how complete a picture your carbon reporting gives to investors, customers and your own decision-makers.
That choice is becoming more consequential. Investors and larger customers are increasingly asking suppliers for supply chain emissions data as part of due diligence and procurement decisions, and a Scope 1 and 2 figure alone doesn’t answer that question if packaging or materials make up a meaningful share of your footprint. Businesses that start reporting Scope 3 now, even in a limited or phased way, are building the systems and data discipline they’ll need if expectations tighten further, rather than trying to build them under pressure later.
A reasonable starting point
Full Scope 3 accounting across every category is a significant undertaking, and it isn’t necessary to start there. A more practical first step is identifying which Scope 3 categories are actually material to your business. For any organisation that packages or ships physical products, plastic packaging is a sensible place to begin: it’s usually possible to get reasonably good data on the volume and type of plastic purchased and disposed of, even before more complex categories like purchased services or employee commuting are tackled.
How 2EA Can Help
If plastic packaging is part of your waste stream, 2EA’s SECR management service includes a Premium package covering waste management, disposal and recycling reporting alongside your mandatory Scope 1 and 2 figures. That gives you a clearer, evidenced starting point for understanding where plastic sits in your wider environmental reporting, before deciding how far to take voluntary Scope 3 disclosure.
Sources
- HM Government, Environmental Reporting Guidelines: Including streamlined energy and carbon reporting guidance (March 2019): https://assets.publishing.service.gov.uk/media/67161e8696def6d27a4c9ab3/environmental-reporting-guidance-secr-march-2019.pdf
