Study of publicly available information highlights organisations setting the pace on environmental action
Earthmark rates businesses on a scale of zero to five, offering what it calls a “Trustpilot for the climate” to improve transparency and help tackle both greenwashing and greenhushing.
Oxford, 2 July 2026 – Following the UK’s hottest June on record, Earthmark has published its latest analysis of environmental performance across British businesses, highlighting the organisations demonstrating the strongest commitment to sustainability. The rankings are based on publicly available environmental data and aim to provide a clearer picture of how companies are responding to growing climate challenges.
Earthmark has now assessed 25,000 brands using its zero-to-five scoring system, which evaluates organisations using publicly disclosed environmental information. The company describes the platform as a “Trustpilot for the climate”, giving businesses and consumers an accessible way to compare environmental performance.
Among UK organisations, the London Metal Exchange, information and analytics company RELX, recruitment specialist PageGroup and fintech business TradingHub achieved the highest scores.
Charlotte Tilbury is the highest-ranked consumer brand, followed by fragrance house Penhaligon’s and credit rating agency Experian.
Rounding out the top 10 are offshore wind engineering consultancy Wood Thilsted, property company Grainger and Alliance Healthcare.
Other UK-headquartered businesses featured in the top 100 include BAE Systems (14), THG (25), Tesco (50), Aviva (67), Diageo (73), NEXT (80) and Revolut (86).
Commenting on the findings, Jack Linnett, CEO of Earthmark, said: “It’s encouraging to see such a broad range of industries represented in the top 10, showing that strong environmental performance is achievable across different sectors.
“The businesses receiving the highest scores are doing more than making sustainability claims. They are providing clear, publicly available evidence that demonstrates action, accountability and measurable progress instead of relying on general statements or ambitious promises.
“This is increasingly important because trust has become one of the biggest issues in corporate sustainability. The organisations performing best in our assessment are those willing to be transparent about their environmental impact and take responsibility for it. That is the kind of leadership businesses need to demonstrate.”
Earthmark uses AI technology to analyse publicly available environmental information. Scores are calculated using a range of indicators, including carbon emissions, waste management, sustainability reporting, net zero commitments and independent third-party assessments. Businesses are compared against others operating within the same sector. A score of one indicates an organisation that is at an early stage of its environmental journey, while a score of five reflects industry-leading environmental performance.
Businesses and online marketplaces can display Earthmark ratings to help customers quickly understand a company’s environmental credentials. The full directory is also publicly available, allowing anyone to view the scores awarded to participating brands.
Jack Linnett added: “Greenwashing and greenhushing both make it harder for people to make informed decisions. Many consumers want to support businesses that are taking meaningful environmental action, but it is often difficult to distinguish genuine progress from marketing claims.”
Visit www.earthmark.io for more information and to search Earthmark scores.
The top 10 UK businesses (Earthmark score)
- London Metal Exchange (4.7)
- RELX plc (4.6)
- PageGroup plc (4.6)
- TradingHub (4.6)
- Charlotte Tilbury Beauty (4.5)
- Penhaligon’s (4.5)
- Experian plc (4.5)
- Wood Thilsted (4.5)
- Grainger plc (4.4)
- Alliance Healthcare (4.4)
(Note: Where overall Earthmark scores are identical, rankings are determined using underlying scores calculated to two decimal places.)
