Willmott Dixon sustainability score: 54/100
Better than 92% of Construction / Real Estate
Leading practice starts at 60. The highest score on SINK is 71.
Willmott Dixon is a privately owned UK construction and building services firm, with roots going back to 1852, headquartered in Letchworth Garden City. It operates across education, healthcare, commercial and infrastructure sectors, employing approximately 1,919 staff and generating £1.1bn revenue in 2025.
Founded 1924Head office Letchworth Garden City, United KingdomStaff ~1,919Revenue £1,113.2M (FY2025)Website ↗
Willmott Dixon has cut operational emissions 63% since 2018 and hit 84% renewable electricity by 2025, backed by SBTi 1.5°C targets and Bureau Veritas assurance. Scope 3 dominates total footprint and rose in 2025 despite absolute operational gains. Supply chain emissions rely on spend-based proxies, not physical material data; nature and timber sourcing remain unquantified.
Willmott Dixon scores 54/100 (Making progress) on SINK's independent climate assessment, scored from public data only. Scores are free. Nobody can pay to change a score, speed it up or hide it. Last verified October 2026.
That places Willmott Dixon joint 71st of 1,023 companies scored, and joint 3rd of 40 in Construction / Real Estate.
What is Willmott Dixon doing well, and where does it fall short?
Strongest on Carbon Footprint: Operations and Transparency & Accountability (8/10, 8/10). Weakest on Emissions Trajectory and Nature & Biodiversity Impact (4/10, 5/10).
Where Willmott Dixon lost points
For each question that lost points, the evidence our public rubric looks for that we didn't find.
What would raise this score
- Whether its emissions are fallingShow a year-on-year fall in its total emissions.
- Its effect on natureMeasure its effect on nature and have it independently verified.
- How clean its energy isShow at least 90% of its energy is renewable.
Every question that lost points
- Emissions from its own operations8/10No verified figures published with their method and a falling trend.
- Emissions from its supply chain7/10No full value-chain map or supplier engagement programme.
- Whether its emissions are falling4/10No evidence of a year-on-year fall in its total emissions.
- How clean its energy is6/10Less than 90% of its energy shown to be renewable.
- Its effect on nature5/10Its effect on nature isn't measured or independently verified.
- How it uses materials and handles waste7/10No verified figures for reuse and recycling across the business.
- Its effect on water6/10No water stewardship programme or verified fall in water use.
- Its climate targets7/10No validated long-term net zero target.
- How openly it reports8/10No mission-locked structure, such as B Corp certification.
A score changes when the evidence does. We use new published evidence at the next rescore. Anyone can send us new evidence, free. How to send it.
How is Willmott Dixon's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleWhat evidence is Willmott Dixon's score based on?
12 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
50% of them were published by Willmott Dixon itself; the rest come from independent sources.
6 of 12 sources are independent of the company.
“We use the operational control approach and opt to include anything that Willmott Dixon pays for under our scope 1 & 2 emissions”
“84% of electricity used to power our offices and came from renewable sources”
“Since 2020, we've planted over 55,000 trees, keeping us on course to meet our target of 100,000 trees by 2030.”
“WILLMOTT DIXON HOLDINGS LIMITED”
“Reduced absolute operational carbon emissions by 57% since our baseline year of 2018 and by 17% since 2023.”
“We support our supply chain partners to develop and implement carbon reduction plans in their own businesses”
“which has approved Willmott Dixon’s emissions reduction targets as being in line with an overall need to limit a global temperature rise to 1.5°C”
“Willmott Dixon has committed to making all of its operations zero carbon by 2030”
“Our Now or Never targets are science-based, meaning they are aligned to keeping global warming levels to 1.5C.”
“use renewable electricity to power all operations by 2030 alongside sharing best practice with peers”
If you believe a source has been misread or a newer version exists, submit a challenge.
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How does Willmott Dixon compare with other construction / real estate companies?
Where Willmott Dixon sits among construction / real estate peers.
Among the 40 major construction / real estate brands we've scored, Willmott Dixon is tied =3rd of 40, with 1 other.
Who scores higher in Construction / Real Estate?
The 2 companies in the sector scoring nearest above Willmott Dixon.
Interface is a rare manufacturing peer with genuine 28-year carbon reduction track record: 96% absolute GHG cuts since 1996, 4% further reduction in 2024, and SBTi-validated 2030 targets already half-met.
See the breakdown →Kier has cut operational emissions 81% since FY19 through HVO switching and electrification pledges, and holds SBTi-validated net-zero targets.
See the breakdown →Which companies moved this week, and why.
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