OCS Group UK sustainability score: 31/100
OCS Group UK is a facilities management and contract services provider registered in Ipswich, offering cleaning, catering, security, hard services and laundry across UK commercial and institutional sites. The 2025 turnover was £1.365bn with approximately 43,787 employees.
More about OCS Group UK
It operates as a subsidiary of OCS Group Topco Limited.
Founded 1995Head office United KingdomStaff ~43,787 (2025)Revenue £1,365.4M turnover (FY ended 31 Dec 2025)Website ↗
OCS Group UK is a £1.4bn facilities services company with rising absolute emissions, only a 2023 baseline for supply-chain carbon, and critical gaps in water and nature assessment. Its self-set climate targets remain unvalidated by SBTi, while waste and energy disclosure remain partial. The company reports actively but lacks the depth needed for a facilities operator of its scale.
OCS Group UK scores 31/100 (Below expectations) 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 OCS Group UK joint 672nd of 940 companies scored, and 5th of 5 in Facilities & Support Services.
What is OCS Group UK doing well, and where does it fall short?
Strongest on Controversies & Red Flags and Carbon Footprint: Operations (8/10, 6/10). Weakest on Emissions Trajectory and Water Impact (0/10, 1/10).
Where OCS Group UK 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 chain6/10No full value-chain map or supplier engagement programme.
- Whether its emissions are falling0/10No evidence its emissions are falling, not even from energy bills or mileage.
- How clean its energy is4/10Less than half its energy shown to be renewable, or no transition plan.
- Its effect on nature3/10No assessment of its effect on nature, and no basic environmental policy.
- How it uses materials and handles waste5/10No measurable waste or recycling targets reported publicly.
- Its effect on water1/10No figures for its water use.
- Its climate targets4/10Its targets aren't science-based or committed to the Science Based Targets initiative.
- How openly it reports5/10No dedicated sustainability role, board oversight or public report.
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 OCS Group UK's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleWhat evidence is OCS Group UK's score based on?
13 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
23% of them were published by OCS Group UK itself; the rest come from independent sources.
OCS Group UK's own accounts are exempt from carbon reporting, so its Scope 1 and 2 figures come from its parent's UK filing (OCS Group Topco), and its Scope 3 figure is a 2023 baseline. We apply the cautious 0.70x size deduction we use when a company's emissions are incomplete (owner ruling 2026-11-05).
10 of 13 sources are independent of the company.
“The Company is exempt from preparing a Streamlined Energy and Carbon Report (SECR) because its energy”
“Scope 1 (Direct emissions - Generated from the fuel (e.g. gas) used in the”
“engage further with our supply chain to reduce emissions and improve the quality/ accuracy of scope 3 data”
“has grown into a goliath – particularly since its 2023 merger with Atalian Servest”
“99 per cent of waste diverted from landfill”
“OCS has published its UK and Ireland Environmental, Social and Governance (ESG) Impact Report”
“Violation Description : Working Time Regulations”
“UK: Cleaners strike as City of London Corporation takes decision to outsource contracts to OCS”
“In 2024, 92% of electricity procured for our offices came from renewable sources.”
“OCS has set a bold goal—to achieve net zero greenhouse gas emissions across all its UK and Ireland operations by 2040”
“Violation Description : Race Discrimination, Unfair Dismissal”
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How does OCS Group UK compare with other facilities & support services companies?
OCS Group UK sits at the bottom of the facilities & support services pack.
Among the 5 major facilities & support services brands we've scored, OCS Group UK sits 5th of 5.
Who scores higher in Facilities & Support Services?
The 3 companies in the sector scoring nearest above OCS Group UK.
Serco has cut its Scope 1 and 2 emissions 32% since 2022, but its supply-chain emissions rose 6% in the latest year, offsetting that progress.
See the breakdown →Bidvest Noonan reports comprehensive Scope 1, 2 and 3 emissions with external ISO 14064-3 verification, but UK absolute emissions rose 47% from FY2023 to FY2025.
See the breakdown →ISS UK's emissions figures are a revenue-based share of a UK group total, and its direct emissions rose 26% in the latest year.
See the breakdown →Which companies moved this week, and why.
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