Gourmet Burger Kitchen scores 28/100 (Significant gaps) on SINK's independent climate assessment — scored from public data only, no company payment can change a number. Last verified May 2026.
That places Gourmet Burger Kitchen joint 471st of 596 companies scored, and joint 34th of 47 in Food Service / Restaurants.
GBK has published no emissions data since 2021 and relies entirely on offsetting rather than reductions. A beef-heavy restaurant chain with material supply chain emissions claims carbon neutrality through full offset reliance—a documented greenwashing indicator. Zero sustainability governance, no targets, no follow-up disclosure.
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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.
This company's public sustainability disclosure is limited. This score is based on the 7 verified sources cited below, rather than padded to a standard count.
Limited data coverage. This assessment is based on 7 sources, 57% of which are self-reported by the company. Scores may change as independent evidence becomes available.
If you believe a source has been misread or a newer version exists, submit a challenge.
Where Gourmet Burger Kitchen sits among food service / restaurants peers.
Among the 47 major food service / restaurants brands we've scored, Gourmet Burger Kitchen is tied =34th of 47, with 3 others.
Score history begins 9 April 2026.
As Gourmet Burger Kitchen'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.
This score is not currently being contested.
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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.
Gourmet Burger Kitchen is a UK-based casual dining chain operating approximately 40–60 restaurants focused on premium burgers and fast-casual dining. Founded in 2001 and headquartered in London, GBK is owned by Boparan Restaurant Group, a multi-brand hospitality operator. The chain has faced operational contraction post-2020 administration.
Large-scale burger QSR chain facing similar supply-chain emissions and transparency challenges in meat-heavy fast food.
View breakdown →Direct UK competitor post-2025 acquisition of 12 GBK sites; provides peer sustainability benchmark in same segment.
View breakdown →Industry reference for global meat-based QSR; demonstrates offset-first greenwashing pitfalls and contrast with science-based transition.
View breakdown →UK casual dining peer; comparable restaurant-scale carbon footprint and waste disclosure challenges in hospitality sector.
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