SINK Blog
Data-driven sustainability insights from the SINK database.
How sustainable are America's 50 biggest companies? We checked the evidence.
We scored all 50 of America's biggest companies on their environmental record, out of 100, with every source shown. Not one reached 60, the score for a company that's doing well.
50 UK companies have promised to run on clean electricity. How do they really score?
Every UK member of RE100, the renewable electricity pledge, scored out of 100 on the same ten questions, with every source shown. Clean power is a good start, but rarely the whole story.
Most of England Is in Drought. We Scored Britain's Water Companies on Climate.
England is still in drought, with 10 hosepipe bans. We ranked Britain's 11 big water companies on climate, from Severn Trent to Thames Water.
We Scored the Whole FTSE 100 on Climate. It's Not Cutting It.
We scored every FTSE 100 company on public evidence: same ten questions, no questionnaire, no fee. They measure their carbon well. Very few are cutting it.
We Scored Every UK University on Climate. Here's What We Found.
We assessed all 147 UK universities on public evidence only, no questionnaire, no fee. 66 met our evidence bar and were published with full scores. The other 81 show that they are under review, or that they had no 2023/24 HESA return, instead of a number.
We remade the Premier League table for sustainability
We scored all 20 Premier League clubs on publicly available environmental evidence, same ten questions we ask every company. Five clubs publish figures you can check. Fifteen don't.
Generic “eco-friendly” claims become illegal in eight weeks. Here’s what will count instead.
From 27 September 2026, generic claims like “eco-friendly” and offset-based “carbon neutral” become unlawful in the EU under Directive 2024/825. Here’s what evidence will count, with real examples.
We scored your trip to see The Odyssey
We scored the companies behind watching The Odyssey at home and at the cinema. The ones that get it to your sofa disclose far more than the ones that get you into a seat.
Tonight's World Cup sponsors, scored on climate.
All seven FIFA World Cup 2026 Partners scored 0–100 on public climate evidence, from Visa to Saudi Aramco. Open methodology, no offsets counted.
Eleven of Europe's 20 Biggest Airlines Have Been Caught Greenwashing. We Scored All of Them.
Courts, the ASA and the European Commission have all ruled against European airlines' green claims. We scored the twenty biggest on their public data, with every source shown.
We scored Britain's "healthy" snack brands on sustainability, and the "natural" ones came last.
We scored seven of Britain's best-known healthy snack brands, from Pip & Nut to Eat Natural. A B Corp logo or the word "natural" on the packet didn't save them.
We scored every UK supermarket on sustainability
We scored every UK supermarket on sustainability, from the Co-op and Sainsbury's to Tesco and ASDA. See the live scores and what holds each one back.
We scored every fast fashion brand on sustainability. Here's what we found.
We scored the big fast fashion brands, from H&M and Zara to SHEIN and Fashion Nova. Here's what drives the gap between fast fashion and durable brands.
We scored hundreds of companies on sustainability. Here's what we found.
The average SINK score, the sectors at the bottom and the scores that surprised us. The headline findings from our database.