J Sainsbury scores 3 points higher than Tesco on SINK's sustainability index.
J Sainsbury is more sustainable according to SINK's open sustainability index, scoring 45/100 vs Tesco's 42/100 — a difference of 3 points.
Tesco scores 42/100 on the SINK sustainability index (Below expectations). Tesco has credible operational carbon progress (65% Scope 1&2 reduction since 2015) and SBTi-validated net-zero targets, but Scope 3 — representing 90% of total emissions — shows no documented absolute decline. Water stewardship is unreported. Biodiversity assessment remains pilot-stage. Operational transparency is strong; supply chain footprint accountability is incomplete.
J Sainsbury scores 45/100 on the SINK sustainability index (Below expectations). Sainsbury's has achieved steep Scope 1+2 reductions (53% since 2018) and 100% renewable electricity, backed by SBTi validation. However, Scope 3 absolute progress remains opaque, and a 2019 Earthsight report tied the retailer to Amazon deforestation via JBS beef supply chains—a governance gap not yet fully closed.
Both companies are rated on the same 10-question SINK rubric: Scope 1/2/3 carbon footprint, energy source, nature and biodiversity, resource use, water, emissions trajectory, science-based targets, transparency, and controversies. Scores are 0–100, based on public data, and fully reproducible.
See the full leaderboard — 500+ companies ranked.
View full leaderboard →