Honest Burgers is a UK-based fast-casual restaurant chain founded in 2010, operating 39+ sites across the country with an integrated butchery.
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Honest Burgers has built a genuine supply chain intervention around regenerative beef but shields itself behind unverified claims. No operational emissions data, no energy strategy, no formal targets. The company grows aggressively while claiming sustainability without the disclosure to back it.
Honest Burgers scores 35/100 (Below expectations) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified May 2026.
That places Honest Burgers joint 482nd of 847 companies scored, and joint 20th of 49 in Food Service / Restaurants.
Where Honest Burgers sits among food service / restaurants peers.
Among the 49 major food service / restaurants brands we've scored, Honest Burgers is tied =20th of 49, with 3 others.
Its three lowest-scoring questions, and what the evidence didn't show.
No Scope 1 or 2 GHG Protocol-aligned data published.
No baseline or year-on-year emissions figures.
No green tariff, no PPA, no on-site generation disclosed.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Controversies & Red Flags and Nature & Biodiversity Impact (7/10, 5/10). Weakest on Carbon Footprint — Operations and Emissions Trajectory (1/10, 1/10).
The 3 companies in the sector scoring nearest above Honest Burgers.
Costa Coffee discloses emissions data only through Companies House filings, not directly, and relies on intensity-based targets despite rising absolute emissions (+30% in 2022).
See the breakdown →Nando's operates 1,200+ outlets globally with minimal public emissions data despite SBTi validation.
See the breakdown →Wendy's has cut operational emissions 37% since 2019 but masks stagnant total progress through intensity metrics.
See the breakdown →The formula and all 10 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
If you believe a source has been misread or a newer version exists, submit a challenge.
Honest Burgers is a UK-based fast-casual restaurant chain founded in 2010, operating 39+ sites across the country with an integrated butchery. The company specializes in beef burgers and has pivoted toward regenerative farming partnerships as its primary sustainability positioning, sourcing from six British farming families and local potato suppliers.
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