Industry reveals embodied carbon of UK concrete fell five per cent last year
Concrete production has long been one of the toughest challenges in construction decarbonisation. The material accounts for a significant share of the sector's carbon footprint, yet it remains essential to almost every building project. However, new figures from the UK industry suggest that meaningful progress is now underway.
According to the latest market data, embodied carbon in UK concrete fell by 5% last year. The reduction reflects both technical changes in how concrete is formulated and regulatory updates that have made lower-carbon mixes easier to specify. For businesses working to reduce emissions in their supply chains, these shifts represent a practical opportunity to cut carbon without compromising on performance.
The progress comes at a time when public sector procurement increasingly demands evidence of carbon reduction. Buyers want to see measurable improvements in the materials they purchase, particularly in high-volume products like concrete. The latest benchmark data provides a reference point that helps businesses demonstrate progress and compare options.
How the industry measures embodied carbon in concrete
The Low Carbon Concrete Group produces the main industry benchmark for embodied carbon in UK concrete. This benchmark covers what are known as cradle-to-gate emissions, which include raw material extraction, transport, and production up to the point the concrete leaves the batching plant. In technical terms, that corresponds to life-cycle stages A1 to A3.
The benchmark is updated periodically using data from producers across the market. Each update reflects current production methods and the mix designs being used in practice. The system rates embodied carbon by strength class, which allows direct comparison between different concrete specifications.
The 2025 update draws on data from the Mineral Products Association covering around 56% of ready-mixed concrete produced in the UK during 2024. That sample size provides a reliable view of market trends, though it also means the figures represent a substantial portion rather than the entire sector. Consequently, the benchmark offers a credible snapshot of where the industry currently stands.
Standards revision opened the door to lower-carbon mixes
The 5% reduction in embodied carbon reported for last year did not happen in isolation. It followed a significant revision to BS 8500, the British Standard that governs concrete specification in the UK. The updated standard was released in 2023 and brought important changes to what materials can be used in concrete mixes.
Previously, the range of supplementary cementitious materials that could be combined in a single mix was more restricted. The revised standard now permits the use of limestone powder alongside materials such as ground granulated blast furnace slag or fly ash. This flexibility allows producers to reduce the proportion of Portland cement clinker in the mix, which is the component responsible for most of the carbon emissions.
Portland cement clinker is produced by heating limestone and clay to extremely high temperatures. That process releases carbon dioxide both from the energy used and from the chemical breakdown of the limestone itself. Replacing even a portion of the clinker with supplementary materials therefore delivers a direct carbon saving.
The standards change matters because it provides the regulatory foundation for using these lower-carbon formulations. Without that foundation, specifiers and contractors would face uncertainty about compliance and performance. The revision removed those barriers and created a clear pathway for wider adoption of lower-carbon concrete across UK construction sites.
Industry estimates suggest that if the changes enabled by the revised BS 8500 are adopted across the market, they could save around 1 million tonnes of CO2 each year. That figure depends on how quickly and widely the new mix designs are taken up in practice. Nevertheless, it illustrates the scale of potential impact when standards align with decarbonisation objectives.
Long-term emissions trajectory shows sustained progress
The recent 5% drop sits within a longer pattern of emissions reduction. According to the Concrete Centre, the UK concrete and cement sector cut carbon emissions by more than 63% between 1990 and 2023. That reduction has been driven by a combination of changes in production technology, fuel switching, and adjustments to the volume and type of cement being produced.
Early action on energy efficiency and process improvements laid the groundwork for these gains. Over time, producers introduced alternative fuels, improved kiln efficiency, and increased the use of supplementary cementitious materials. The result has been a steady decline in emissions intensity even as overall construction activity fluctuated.
The Mineral Products Association's roadmap report highlights that early action and changing production levels have been central to this trajectory. While demand for concrete varies with economic cycles, the underlying emissions per tonne have continued to fall. This trend suggests that technical and operational improvements are embedding themselves in standard practice.
What this means for procurement and supply chain carbon
For businesses managing construction projects or procurement programmes, the shift toward lower-carbon concrete has several practical implications. First, it means that specifying reduced embodied carbon is now more straightforward than it was even a few years ago. The materials and standards are in place to support lower-carbon choices without requiring bespoke solutions.
Second, the benchmark data provides a basis for setting targets and measuring progress. Buyers can compare the embodied carbon of different concrete mixes and track improvements over time. This visibility is particularly important for organisations reporting under frameworks such as PPN 06/21, which requires suppliers to publish carbon reduction plans when bidding for central government contracts above certain thresholds.
Third, the 5% year-on-year reduction demonstrates that change is happening at a measurable pace. That matters for businesses setting their own carbon reduction trajectories. If suppliers are already achieving annual improvements, those gains can be factored into forward planning and target-setting. It also means that buyers can reasonably expect continued progress in the years ahead.
However, challenges remain. The benchmark currently covers 56% of the ready-mixed concrete market, which means a significant portion of production is not yet reflected in the data. Wider adoption of lower-carbon mixes will be necessary to ensure that the reported reductions become structural rather than confined to a subset of producers. For buyers, this underscores the importance of supplier engagement and specification requirements that encourage broader uptake.
There is also the question of performance and durability. Lower-carbon concrete must meet the same requirements for strength, longevity, and safety as conventional mixes. The industry emphasises that the materials being used under the revised BS 8500 are designed to maintain these standards. For specifiers, this means that carbon reduction does not require compromising on the fundamental properties that concrete must deliver in service.
Market data shows embodied carbon reduction across strength classes
- Embodied carbon in UK concrete fell by 5% year-on-year according to the latest Low Carbon Concrete Group benchmark.
- The benchmark covers cradle-to-gate emissions, corresponding to life-cycle stages A1 to A3 in environmental product declarations.
- Data for the 2025 benchmark update represents approximately 56% of ready-mixed concrete produced in the UK during 2024.
- The UK concrete and cement sector reduced emissions by more than 63% between 1990 and 2023, driven by process improvements and material substitution.
- The 2023 revision to BS 8500 enabled greater use of supplementary cementitious materials, including combinations of limestone powder with ground granulated blast furnace slag or fly ash.
- Industry analysis estimates that widespread adoption of the revised standard could save around 1 million tonnes of CO2 annually across UK construction.
Specification choices now carry measurable carbon implications
The reduction in embodied carbon reflects technical changes that are already available in the market. Businesses do not need to wait for future innovations or rely on unproven technologies. The lower-carbon mixes are being produced today using materials that have been tested and approved under UK standards.
For organisations with carbon reduction commitments, this creates an immediate opportunity. Specifying lower-carbon concrete can contribute to Scope 3 emissions reductions, which cover indirect emissions in the supply chain. Construction materials typically represent a significant portion of Scope 3 footprints, so improvements in concrete can have a material impact on overall carbon accounting.
It also means that businesses can begin aligning their procurement with the direction of regulatory travel. As building regulations tighten and carbon reporting requirements expand, the ability to demonstrate lower embodied carbon in materials will become increasingly important. Early adoption of lower-carbon specifications positions businesses to meet those expectations without requiring last-minute changes to supply chains or project plans.
From a commercial perspective, the shift also affects tender responses and supplier selection. Public sector buyers in particular are placing greater weight on carbon credentials when evaluating bids. Being able to specify and source lower-carbon concrete strengthens a business's ability to compete for contracts where carbon performance is a differentiating factor.
There are practical steps that businesses can take now. Reviewing current concrete specifications against the revised BS 8500 is a starting point. Engaging with suppliers to understand what lower-carbon options they offer and how those options compare on embodied carbon, cost, and performance is another. For larger projects, requesting environmental product declarations can provide detailed carbon data that supports informed decision-making.
We support businesses with carbon reporting requirements and supply chain carbon management through our compliance services, which include support for Scope 3 emissions accounting and supplier engagement. For organisations looking to build internal capability, SBS Academy offers training on carbon measurement and sustainable procurement practices.
Where to find detailed guidance and technical resources
The Low Carbon Concrete Group publishes the full benchmark data and methodology, which is available through the Concrete Centre. This resource provides detailed information on embodied carbon by strength class and mix type, along with guidance on interpretation and application.
The British Standards Institution maintains the official text of BS 8500, which sets out the specification requirements for concrete in the UK. Understanding the standard is essential for anyone involved in specifying or procuring concrete for construction projects.
The Mineral Products Association provides industry-wide data and reports on emissions trends, production methods, and the sector's decarbonisation roadmap. Their publications offer context on how the UK concrete sector is evolving and what further changes are anticipated. You can access their resources at mineralproducts.org.
For businesses reporting carbon emissions under regulatory frameworks, the Department for Energy Security and Net Zero publishes guidance on Scope 3 emissions and supply chain carbon accounting. This is available on gov.uk and provides the official government position on reporting requirements and methodologies.