Diageo is a London-headquartered spirits and beer multinational with 29,860 employees and FY2025 revenue of $27.96bn.
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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.
Diageo scores 46/100 (Making progress) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified May 2026.
That places Diageo joint 235th of 847 companies scored, and joint 15th of 46 in Food & Beverage (non-meat).
Where Diageo sits among food & beverage (non-meat) peers.
Among the 46 major food & beverage (non-meat) brands we've scored, Diageo is tied =15th of 46, with 1 other.
Its three lowest-scoring questions, and what the evidence didn't show.
Scope 1&2 declined 18.8% from FY2020 baseline to ~345kt (FY2024).
No systematic greenwashing; EU lobbying via spiritsEUROPE and FoodDrinkEurope on trade policy without anti-climate evidence.
No quantified nature footprint published; formal deforestation commitments with third-party verification not evidenced.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Carbon Footprint — Operations and Energy Source (8/10, 7/10). Weakest on Emissions Trajectory and Controversies & Red Flags (4/10, 4/10).
The 3 companies in the sector scoring nearest above Diageo.
Oatly publishes detailed sustainability data and leads on product-level carbon transparency, but absolute emissions surged 31% in 2024 while per-liter intensity rose 15%.
See the breakdown →Ella's Kitchen has SBTi-validated emissions targets and a genuine biodiversity partnership with the RSPB, but lacks published absolute emissions data to verify progress.
See the breakdown →CCEP's Scope 1, 2 and 3 targets are SBTi-validated and its emissions data carries EY limited assurance.
See the breakdown →The formula and all 14 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale14 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
7 of 14 sources are independent of the company.
If you believe a source has been misread or a newer version exists, submit a challenge.
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.
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