Ark Data Centres sustainability score: 24/100
Ark Data Centres designs, builds and runs data centres in the UK, with campuses at Cody Park, Spring Park and Meridian Park held through related companies. Its turnover comes mainly from data centre income and power income, with the rest mostly from management charges to related entities and fit-out fees.
More about Ark Data Centres
Ark Data Centres Limited was incorporated in 2005, and its ultimate parent is Ark Capital Partners I LP Inc., registered in the Isle of Man. It had 139 employees on average and £257.6M revenue in its year to June 2025.
Founded 2005Head office Corsham, United KingdomStaff ~139 (average, year to 30 June 2025)Revenue ~£257.6M (year to 30 June 2025)Website ↗
Ark reported gross emissions of 17,335 tCO2e in 2024, up from 2,988 t in 2023, partly through a changed energy-from-waste factor and added Scope 3 categories. It publishes no figure for capital goods, and purchased goods only in part, so the size deduction for an incomplete footprint (0.70x) applies. Its utility electricity is backed by REGO certificates through supply contracts that name no supplier, so they earn no credit. Its one direct supply is a private wire from an energy-from-waste plant, which is not renewable. Its Net Zero 2030 goal is self-set and plans offsets, and it publishes no water volume. Its Corsham extension drew over 1,100 comments; no fine was found.
Ark Data Centres scores 24/100 (Significant gaps) on SINK's independent climate assessment, scored from public data only. Scores are free. Companies can never pay for anything about their own score. Last verified November 2026.
That places Ark Data Centres joint 901st of 1,017 companies scored, and 40th of 40 in Construction / Real Estate.
What is Ark Data Centres doing well, and where does it fall short?
Strongest on Controversies & Red Flags and Carbon Footprint: Operations (7/10, 6/10). Weakest on Emissions Trajectory and Energy Source (0/10, 2/10).
Where Ark Data Centres lost points
For each question that lost points, the evidence our public rubric looks for that we didn't find.
- Emissions from its own operations6/10Its own emissions aren't independently verified or tracked over several years.
- Emissions from its supply chain4/10Most of its supply-chain (Scope 3) emissions aren't measured.
- Whether its emissions are falling0/10No evidence its emissions are falling, not even from energy bills or mileage.
- How clean its energy is2/10No renewable energy tariff or major efficiency investment shown.
- Its effect on nature2/10No assessment of its effect on nature, and no basic environmental policy.
- How it uses materials and handles waste3/10No active waste reduction, reuse or repair shown.
- Its effect on water2/10No monitoring of water use, or no measures to reduce it.
- Its climate targets3/10No specific targets with dates.
- How openly it reports5/10No dedicated sustainability role, board oversight or public report.
- Its record on controversies7/10Points deducted for controversies or its business model. The finding is under question 10.
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 Ark Data Centres's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleWhat evidence is Ark Data Centres's score based on?
17 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
18% of them were published by Ark Data Centres itself; the rest come from independent sources.
Scope 2, market-based 12,325 t (2024), location-based 45,605 t (2023). The score uses market-based.
14 of 17 sources are independent of the company.
“Electricity purchased (Market based) 12,325 226”
“The emissions inventory reported has not undergone specific third-party assurance/verification.”
“Overall, we consider the likelihood of exceedances to be low”
“We are equally committed to conserving habitats for native wildlife”
“ensuring consideration is given to the waste hierarchy”
“Our supply chain is the area we need to concentrate on”
“We at Ark have built bat caves, badger setts and conservation zones into our campuses”
“Squire accepts that EfW should not be compared to renewable energy such as solar and wind”
“the loss of biodiversity, the threat posed to endangered bat species”
“the Donkey Field is home to 11 species of bats and 250 species of bugs”
“Planning permission has been granted subject to a detailed set of conditions”
“Allan Bosley Director, Public Affairs Ark Data Centres”
“reduces the utility water supply requirement from 33 litres to just 5 litres per second”
“68209 - Other letting and operating of own or leased real estate”
“more than 1,100 comments have been left on the planning application”
“over 1,100 public objections centred on flooding, noise, and building height”
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How does Ark Data Centres compare with other construction / real estate companies?
Ark Data Centres sits at the bottom of the construction / real estate pack.
Among the 40 major construction / real estate brands we've scored, Ark Data Centres sits 40th of 40.
Who scores higher in Construction / Real Estate?
The 3 companies in the sector scoring nearest above Ark Data Centres.
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