GBK has published no emissions data since 2021, when it claimed carbon neutrality entirely through offsetting—a greenwashing tactic abandoned without follow-up. A beef-focused restaurant chain with a material supply chain footprint reports zero Scope 3 data, no reduction targets, and no governance structure. Four years of silence on sustainability after an offset-only announcement.
Same formula for every company. No curve. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleStrongest on Controversies & Red Flags and Energy Source (5/10, 3/10). Weakest on Transparency & Accountability and Targets & Commitments (1/10, 1/10).
7 sources used in this assessment. All publicly available. Each row shows which rubric questions it informed.
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Among the 46 major food service / restaurants brands we've scored, Gourmet Burger Kitchen sits 33rd of 46.
Score history begins 9 April 2026.
As Gourmet Burger Kitchen's score updates, the trajectory will appear here.
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Gourmet Burger Kitchen (GBK) is a UK burger restaurant chain operating approximately 40–60 outlets, down from a pre-pandemic peak of 90. Owned by Boparan Restaurant Group, GBK focuses on premium beef burgers and operates mid-market casual dining venues across the UK. Annual revenue circa £125M.
Direct peer: UK burger chain; relevant comparison on supply chain transparency and climate strategy maturity.
View breakdown →Large-scale burger operator; useful benchmark for Scope 3 disclosure and beef supply chain engagement.
View breakdown →Global burger QSR with documented sustainability reporting; shows industry capability standard GBK has not met.
View breakdown →Alternative protein player; contrasts with GBK's beef-centric model and supply chain carbon intensity.
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