Rubies in the Rubble sustainability score: 44/100
Better than 58% of Food & Beverage (non-meat)
Making progress starts at 46. The highest score on SINK is 71.
Rubies in the Rubble is a UK-based B Corp condiment company that transforms surplus and imperfect produce into ketchups, mayos and other condiments. Founded around 2011, it partners with farms in Portugal and the UK, outsourcing manufacturing to avoid owned production.
More about Rubies in the Rubble
The company positions itself around food waste diversion and plant-based alternatives, selling primarily through retail (Ocado, Waitrose) and foodservice channels.
Founded 2010Head office London, United KingdomStaff ~13Revenue ~£2-4M (estimated)Website ↗
Rubies in the Rubble is a 13-person food waste condiment maker with a genuinely circular business model but almost no quantified environmental data. It publishes lifecycle assessments and food waste diversion claims without formal emissions accounting. Growth (146% YoY) means absolute emissions are rising. B Corp certification at 95.8 shows governance; weak spots are missing carbon targets, unverified renewable energy strategy, and no Scope 1, 2, or 3 quantification.
Rubies in the Rubble scores 44/100 (Below expectations) on SINK's independent climate assessment, scored from public data only. Scores are free. Nobody can pay to change a score, speed it up or hide it. Last verified May 2026.
That places Rubies in the Rubble joint 306th of 1,023 companies scored, and joint 16th of 51 in Food & Beverage (non-meat).
What is Rubies in the Rubble doing well, and where does it fall short?
Strongest on Controversies & Red Flags and Resource Use & Waste (8/10, 6/10). Weakest on Energy Source and Carbon Footprint: Operations (2/10, 3/10).
Where Rubies in the Rubble lost points
For each question that lost points, the evidence our public rubric looks for that we didn't find.
What would raise this score
- How clean its energy isMove to a renewable energy tariff or make a major efficiency investment.
- Emissions from its own operationsPublish emissions figures for its own operations, even an estimate from energy bills.
- Whether its emissions are fallingShow its emissions are falling, even from energy bills or mileage.
Every question that lost points
- Emissions from its own operations3/10No emissions figures for its own operations, not even an estimate from energy bills.
- Emissions from its supply chain4/10Most of its supply-chain (Scope 3) emissions aren't measured.
- Whether its emissions are falling3/10No evidence its emissions are falling, not even from energy bills or mileage.
- How clean its energy is2/10No renewable energy tariff or major efficiency investment shown.
- Its effect on nature5/10Its effect on nature isn't measured or independently verified.
- How it uses materials and handles waste6/10No verified figures for reuse and recycling across the business.
- Its effect on water3/10No monitoring of water use, or no measures to reduce it.
- Its climate targets3/10No specific targets with dates.
- How openly it reports5/10No dedicated sustainability role, board oversight or public report.
A score changes when the evidence does. We use new published evidence at the next rescore. Anyone can send us new evidence, free. How to send it.
How is Rubies in the Rubble's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleHas Rubies in the Rubble's score changed?
Rubies in the Rubble's score has been reviewed 3 times and currently stands where it started, at 44.
- 44 → 448 November 2026
Source added, 8 November 2026: the company's filed accounts, quoted for its staff numbers and that it files as a small company. They confirm it is a small company, so the size rule is unchanged. Score unchanged.
- 44 → 447 November 2026
Correction, 7 November 2026: removed an unsourced emissions figure. Score unchanged.
- Scored 445 April 2026
Initial score at platform launch
What evidence is Rubies in the Rubble's score based on?
11 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
45% of them were published by Rubies in the Rubble itself; the rest come from independent sources.
Scored on 5 April 2026 under an earlier version of our method. We're re-checking it under the current method.
“Average number of employees during the year 4 9 … These accounts have been prepared in accordance with the provisions applicable to companies subject to the small companies regime.”
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How does Rubies in the Rubble compare with other food & beverage (non-meat) companies?
Where Rubies in the Rubble sits among food & beverage (non-meat) peers.
Among the 51 major food & beverage (non-meat) brands we've scored, Rubies in the Rubble is tied =16th of 51, with 6 others.
Who scores higher in Food & Beverage (non-meat)?
The 3 companies in the sector scoring nearest above Rubies in the Rubble.
Carlsberg reports thorough, assured emissions data, but its reported total rose 9% in 2025 to 9.0 MtCO2e after the Britvic deal, and most of its renewable electricity comes from unbundled certificates.
See the breakdown →Oatly reports its emissions in detail, but its total rose from 159,727 t in 2020 to 304,193 t in 2025 while its targets are per litre, not absolute, so emissions can keep rising with sales.
See the breakdown →innocent's footprint was 232,810 tCO2e in 2025, mostly from its supply chain, and BSI verified it.
See the breakdown →Which companies moved this week, and why.
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