Vodafone Group Plc scores 11 points higher than BT Group plc on SINK's sustainability index.
Vodafone Group Plc is more sustainable according to SINK's open sustainability index, scoring 53/100 vs BT Group plc's 42/100 — a difference of 11 points.
BT Group plc scores 42/100 on the SINK sustainability index (Below expectations). BT Group discloses operational emissions comprehensively with third-party assurance and has achieved 52% absolute Scope 1+2 reduction. But renewable energy coverage dropped to 53% after ditching dubious certificates, Scope 3 progress lags targets at 25% of 42%, and biodiversity—material given its vast UK infrastructure—remains unmeasured and below materiality threshold.
Vodafone Group Plc scores 53/100 on the SINK sustainability index (Making progress). Vodafone has built credible near-term climate targets validated by SBTi and achieved major operational emissions cuts (84% below FY20). Its Scope 3 reporting is granular but inconsistent—declining in FY25 partly through asset sales, not decarbonisation. Nature disclosure remains skeletal; trade association climate alignment is unreviewed.
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.
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