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 628th of 809 companies scored, and joint 36th of 49 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.
Every supplier scored from public evidence like this, ranked, in 48 hours. No questionnaires, and your suppliers never know.
This score uses public evidence only. Challenge any question for free, or ask for a human review of evidence you haven't published.
Same ten questions for every company. 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 49 major food service / restaurants brands we've scored, Gourmet Burger Kitchen is tied =36th of 49, with 3 others.
Score history begins 9 April 2026.
As Gourmet Burger Kitchen's score updates, the trajectory will appear here.
This score is not currently being contested.
Every challenge is published. We'd rather be corrected than wrong — that's the whole point.
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.
View breakdown →Email alerts when a rubric question is verified, a challenge is resolved, or the overall score changes.
One email, every Sunday. Score changes, new research, the stories behind the numbers. Free.
No spam. Unsubscribe in one click.
Checking a company?
Search free →Checking your suppliers?
Get your list scored in 48 hours →Been scored?
See what's behind your number →Nobody can pay us to change a number.