Byron Burger is a UK-based casual dining chain specializing in beef burgers, founded in 2007 and headquartered in London. Operating approximately 9–12 sites following multiple restructurings, the company sources grass-fed UK and Irish beef and operates commercial kitchens with significant energy and water use.
Currently owned by Niyamo Capital as of December 2025.
Founded 2007Head office London, UKStaff ~200–400Revenue ~£10–20M (estimated, post-restructuring with ~9–12 sites)Website ↗
Byron Burger publishes no emissions data, targets, or sustainability strategy despite operating a beef-heavy restaurant chain with material operational and supply-chain carbon impact. The company's sole environmental claim—recyclable packaging—is unverified marketing language. Multiple insolvencies and recent ownership change signal financial distress, not environmental commitment.
Byron Burger scores 27/100 (Significant gaps) on SINK's independent climate assessment, scored from public data only. Scores are free. Companies can never pay for anything about their own score. Last verified May 2026.
That places Byron Burger joint 759th of 934 companies scored, and joint 38th of 51 in Food Service / Restaurants.
Limited evidence. This score rests on 5 sources, 20% of them published by the company itself. Every source cited here passed the same quality checks as any other score: all live, none from data aggregators. There is simply less of it.
Strongest on Controversies & Red Flags and Energy Source (7/10, 2/10). Weakest on Targets & Commitments and Carbon Footprint: Operations (0/10, 1/10).
For each question that lost points, the evidence our public rubric looks for that we didn't find.
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SINK = (0.3 × Base + 0.7 × Performance) × Scale5 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
20% of them were published by Byron Burger itself; the rest come from independent sources.
Scored on 9 April 2026 under an earlier version of our method. We're re-checking it under the current method.
This company's public sustainability disclosure is limited. This score is based on the 5 verified sources cited below, rather than padded to a standard count.
Limited data coverage. This assessment is based on 5 sources, 20% of which are self-reported by the company. Scores may change as independent evidence becomes available.
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Where Byron Burger sits among food service / restaurants peers.
Among the 51 major food service / restaurants brands we've scored, Byron Burger is tied =38th of 51, with 2 others.
The 3 companies in the sector scoring nearest above Byron Burger.
GBK has published no emissions data since 2021 and relies entirely on offsetting rather than reductions.
See the breakdown →Bill's Restaurants publishes zero sustainability data across operations, supply chain, energy, waste, water, and targets.
See the breakdown →Tim Hortons hides behind parent company RBI's consolidated reporting, obscuring brand-level emissions accountability across 6,043 restaurants.
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