GRS Roadstone
Britain's leading trader, transporter and handler of construction materials, building products and waste materials, plus associated construction solutions.

Una’s AI-driven insights gave us a roadmap to decarbonise, helping us measure and maximise the ROI of our sustainability initiatives while reducing costs
The Challenge
GRS Roadstone operates across a 2,000+ supplier and buyer network and needed full supply-chain emissions visibility to scale decarbonisation without harming margins or operational performance. Key obstacles included lack of real-time supplier insight, high upfront cost of decarbonisation, and no clear way to prioritise initiatives for maximum ROI.
The Solution
ExpectAI applied Una to deliver supply-chain carbon intelligence and unlock funding pathways:
- Adaptive Carbon Profiles at scale. Una created ACPs for 2,000+ suppliers and buyers, giving GRS an immediate, auditable view of Scope 1–3 emissions and the suppliers driving the largest impact.
- Lowered cost of transition. Una identified eligible grants, subsidies and monetisation routes (including voluntary carbon markets), reducing the net cost of decarbonisation for GRS and its suppliers.
- ROI-led prioritisation and engagement. The Compass Score ranked actions by combined environmental and financial return; automated insights enabled targeted supplier engagement to accelerate Scope-3 reductions.
- Automated compliance. Reporting and governance workflows were automated to stay aligned with evolving regulations and stakeholder expectations.
The Results
- Tracked and influenced supply-chain emissions at scale, enabling consistent progress toward net zero.
- Identified millions in financial benefits via grants, subsidies and monetised carbon savings, materially lowering project costs.
- Delivered a data-backed, ROI-driven roadmap so GRS could act decisively on the highest-value initiatives.
- Reduced compliance burden and strengthened GRS’s position as a sustainability leader in UK construction.
How We Can Help Your Company
Una combines AI, public and proprietary data, and financial modelling to give organisations visibility across complex supply chains, unlock funding and revenue pathways, and prioritise climate actions that improve both sustainability and the bottom line.
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