Diageo has cut its climate targets significantly—halving Scope 3 reduction from 50% to 26% and pushing net-zero operations from 2030 to 2040—while claiming validation against 1.5°C science. Operations emissions fell 18.8% since 2022, but total value-chain emissions rose. A £1.2m regulatory fine for unreported climate pollution, delisted SBTi targets, and a product-integrity lawsuit expose weak accountability.
Same formula for every company. No curve. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleStrongest on Carbon Footprint — Operations and Energy Source (8/10, 7/10). Weakest on Controversies & Red Flags and Emissions Trajectory (4/10, 4/10).
14 sources used in this assessment. All publicly available. Each row shows which rubric questions it informed.
7 of 14 sources are third-party verified or public record.
If you believe a source has been misread or a newer version exists, submit a challenge.
Among the 41 major food & beverage (non-meat) brands we've scored, Diageo is tied =12th of 41, with 1 other.
Score history begins 5 April 2026.
As Diageo's score updates, the trajectory will appear here.
We're backfilling historical scores for FTSE 100 and S&P 100 companies over the coming weeks.
Every challenge is published. We'd rather be corrected than wrong — that's the whole point.
No challenges submitted yet. If you have evidence that contradicts this score, you can challenge any question above — cite a public source and we'll review it.
Diageo is a London-headquartered spirits and beer multinational with 29,860 employees and FY2025 revenue of $27.96bn. It manufactures and distributes premium brands including Guinness, Johnnie Walker, Smirnoff, and Casamigos across 180+ countries. The company ranks among the world's largest beverage producers by revenue.
Direct competitor in spirits and beer; similar scale and supply-chain emissions exposure.
View breakdown →Beverage peer with comparable water materiality and European regulatory footprint.
View breakdown →Food & beverage giant that has also delayed and weakened climate targets under pressure.
View breakdown →Large consumer goods conglomerate with similar portfolio complexity and greenwashing scrutiny.
View breakdown →Email alerts when a rubric question is verified, a challenge is resolved, or the overall score changes.
One email, every Sunday. Score changes, new research, the stories behind the numbers. Free.
No spam. Unsubscribe in one click.
Readers and institutions support our work. Companies can pay to submit evidence we couldn't find. Neither type of payment changes a score.