We've scored 1,000 companies. Here are the ones getting it right.
We've scored over 1,000 companies out of 100 on public evidence. These are the ones getting it right, and what they have in common.
We've now scored 1,070 companies out of 100, on the same ten questions, from public evidence. Most have a long way to go. A few are getting it right.
Key findings
- We've scored 1,070 companies. The average score is 38 out of 100.
- 14 score 60 or more, the score for a company that's doing well.
- The top score is 71. Nobody comes close to 100.
- The leaders publish their whole footprint, their emissions are falling, and someone independent checks the numbers.
The companies scoring 60 or more
This list covers companies scored on our current method with full evidence. It leaves out older scores we're re-checking, and scores published with a limited-evidence note.
| # | Company | SINK score | Why it scores well |
|---|---|---|---|
| 1 | EcosiaSearch engine that puts its profits into climate actionOwns and runs a 13MWp solar park near Rottenbach in Germany, with the energy company Naturstrom. Ecosia | 71 | Owns and runs a 13MWp solar park near Rottenbach in Germany, with the energy company Naturstrom. Ecosia |
| 2 | SageAccounting and payroll softwareHas science-based targets to halve its own and its supply-chain emissions by 2030 from 2019, and to reach net zero by 2040. SBTi target list | 64 | Has science-based targets to halve its own and its supply-chain emissions by 2030 from 2019, and to reach net zero by 2040. SBTi target list |
| 3 | Winnow SolutionsTechnology that measures food waste in commercial kitchensUsed by more than 1,400 businesses, saving the equivalent of 36 million meals a year from the bin. Ellen MacArthur Foundation | 63 | Used by more than 1,400 businesses, saving the equivalent of 36 million meals a year from the bin. Ellen MacArthur Foundation |
| 4= | CapgeminiIT services and consultingCut its own emissions (Scope 1 and 2) by 94% from 2019, and now uses 100% renewable electricity. Capgemini annual report 2025 | 62 | Cut its own emissions (Scope 1 and 2) by 94% from 2019, and now uses 100% renewable electricity. Capgemini annual report 2025 |
| 4= | FreshfieldsInternational law firmCut its own emissions (Scope 1 and 2) by 81%, from 6,916 tonnes of CO2e in 2018/19 to 1,322 in 2024/25, figures verified by Carbon Footprint Ltd. Freshfields accounts, Companies House | 62 | Cut its own emissions (Scope 1 and 2) by 81%, from 6,916 tonnes of CO2e in 2018/19 to 1,322 in 2024/25, figures verified by Carbon Footprint Ltd. Freshfields accounts, Companies House |
| 6= | AdobeCreative and document softwareIts 2025 emissions figures were independently verified by Apex Companies. Adobe verification opinion | 61 | Its 2025 emissions figures were independently verified by Apex Companies. Adobe verification opinion |
| 6= | ASN BankDutch bankHas a science-based target to cut its own emissions 45% by 2030 from 2020, and to cut the emissions of the homes it lends on by 59% per square metre by 2030. ASN Bank green bond factsheet | 61 | Has a science-based target to cut its own emissions 45% by 2030 from 2020, and to cut the emissions of the homes it lends on by 59% per square metre by 2030. ASN Bank green bond factsheet |
| 6= | Guardian Media GroupPublisher of the GuardianIts total emissions fell 48% from 2019/20 to 2024/25, from 33,949 to 17,789 tonnes of CO2e. Guardian sustainability report 2024/25 | 61 | Its total emissions fell 48% from 2019/20 to 2024/25, from 33,949 to 17,789 tonnes of CO2e. Guardian sustainability report 2024/25 |
| 6= | ØrstedWind farm developerCut the emissions from its own operations (Scope 1) by 75% in 2025. Ørsted annual report 2025 | 61 | Cut the emissions from its own operations (Scope 1) by 75% in 2025. Ørsted annual report 2025 |
| 10= | JCDecauxOutdoor advertising: bus shelters, billboards and airport screensIts emissions across its whole footprint (Scopes 1, 2 and 3) were 40.9% lower in 2025 than in 2019. JCDecaux sustainability report 2025 | 60 | Its emissions across its whole footprint (Scopes 1, 2 and 3) were 40.9% lower in 2025 than in 2019. JCDecaux sustainability report 2025 |
| 10= | KPNDutch telecoms companyIts own emissions fell in 2025: Scope 1 from about 7,000 to 5,000 tonnes of CO2e, and Scope 2 from 118,000 to 95,000. KPN annual report 2025 (Dutch) | 60 | Its own emissions fell in 2025: Scope 1 from about 7,000 to 5,000 tonnes of CO2e, and Scope 2 from 118,000 to 95,000. KPN annual report 2025 (Dutch) |
| 10= | Manchester Metropolitan UniversityUniversity in ManchesterHad cut its own emissions (Scope 1 and 2) by 32.1% by 2023/24, towards a 44% target for 2025/26. Manchester Met case study, GOV.UK | 60 | Had cut its own emissions (Scope 1 and 2) by 32.1% by 2023/24, towards a 44% target for 2025/26. Manchester Met case study, GOV.UK |
| 10= | PearsonEducation publisher and learning companyIts emissions from the electricity it buys (market-based Scope 2) fell to 11 tonnes of CO2e in 2024, from 1,719 the year before. Pearson sustainability performance 2024 | 60 | Its emissions from the electricity it buys (market-based Scope 2) fell to 11 tonnes of CO2e in 2024, from 1,719 the year before. Pearson sustainability performance 2024 |
| 10= | RightmoveUK property websiteHas science-based targets to cut its own emissions 47.6% and its supply-chain emissions 42% by 2030, and to reach net zero by 2040. SBTi target list | 60 | Has science-based targets to cut its own emissions 47.6% and its supply-chain emissions 42% by 2030, and to reach net zero by 2040. SBTi target list |
The UK top ten
The highest-scoring UK companies in the same set, with today's scores.
What do the leaders have in common?
They publish the whole footprint.
For most companies, the biggest part of the footprint is in the supply chain: what they buy, and how their products are used. The leaders put a number on it, not just on their own offices and vans. Guardian Media Group publishes a figure for each part, from printing the paper to the energy readers' devices use.
Their numbers are falling.
Real cuts, in tonnes, not just a promise. Capgemini has cut its own emissions by 94% since 2019, Freshfields by 81%, and the Guardian's whole footprint is down 48%.
Someone independent checks them.
A figure someone else has checked is worth more than one nobody has. Adobe's figures were verified by Apex Companies, and Freshfields' by Carbon Footprint Ltd.
Why isn't the top who you'd expect?
You might expect the brands that talk most about sustainability. Three things explain why they aren't always here:
- We score the company, not the product. Selling electric cars doesn't remove the emissions from making them.
- Size counts. The more a company emits in total, the bigger the deduction.
- Industry counts. Part of every score reflects the harm a company's industry does by its nature. Software starts from a better place than cars or oil.
So most of the leaders are software, professional services, media and telecoms companies, whose footprint is mostly offices, travel and electricity. But heavy industry can score well too. Ørsted builds wind farms, and cut the emissions from its own operations by three-quarters in 2025.
Why does nobody score above 71?
A top score would need everything at once: a full footprint that someone independent has checked, emissions falling fast across all of it, clean energy, science-based targets, little harm to nature, water and waste, and a clean record. Nobody meets all of that yet.
Even the leaders lose points somewhere, often on the supply chain, which is usually the biggest part of a footprint and the hardest to cut. Every company's page shows which questions it lost points on, and what evidence would change its score.
How does your company, or your supplier, compare?
Search every score to find a company you work for, buy from or sell to.
Checking a whole list of suppliers? Supplier check scores them from public evidence. The first 5 are free.
FAQ
What is the most sustainable company?
Of the companies we've scored, the highest today is Ecosia at 71/100. We score every company out of 100 on the same ten questions, from public evidence.
What are the most sustainable UK companies?
The UK top ten is above. When we published, Sage was first, then Winnow Solutions and Freshfields.
Does a low score mean a bad company?
No. A score measures a company's environmental record as public evidence shows it. It isn't a verdict on its people or its products. A company that publishes little, or works in a high-impact industry, can score lower. Each company's page shows which questions it lost points on, and what evidence would change its score.
Can a company pay to improve its score?
No. Scores are free. Nobody can pay to change a score, speed it up or hide it. Anyone can send us new evidence, free.
Counts, averages and scores on this page are live. Each line in the table links to the source it comes from. Current method: SINK methodology v2.5 or later.
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