Protein Works sustainability score: 19/100
Better than 0% of Food & Beverage (non-meat)
Below expectations starts at 31. The highest score on SINK is 71.
Head office GBStaff ~165Revenue ~£51MWebsite ↗
Protein Works scores 19/100 (Significant gaps) 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 September 2026.
That places Protein Works joint 991st of 1,023 companies scored, and 51st of 51 in Food & Beverage (non-meat).
What is Protein Works doing well, and where does it fall short?
Strongest on Controversies & Red Flags and Carbon Footprint: Operations (8/10, 2/10). Weakest on Emissions Trajectory and Targets & Commitments (0/10, 0/10).
Where Protein Works 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
- Whether its emissions are fallingShow its emissions are falling, even from energy bills or mileage.
- Its climate targetsSet emissions reduction targets.
- Emissions from its supply chainAssess where its supply-chain emissions come from.
Every question that lost points
- Emissions from its own operations2/10No emissions figures for its own operations, not even an estimate from energy bills.
- Emissions from its supply chain1/10No assessment of where its supply-chain emissions come from.
- Whether its emissions are falling0/10No evidence its emissions are falling, not even from energy bills or mileage.
- How clean its energy is1/10No renewable energy tariff or major efficiency investment shown.
- Its effect on nature1/10No evidence it knows its main risks to nature.
- How it uses materials and handles waste2/10No active waste reduction, reuse or repair shown.
- Its effect on water1/10No figures for its water use.
- Its climate targets0/10No emissions reduction targets.
- How openly it reports1/10No sustainability information published.
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 Protein Works's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleHas Protein Works's score changed?
Protein Works's score has been reviewed 2 times and currently stands where it started, at 19.
- 19 → 197 November 2026
Correction, 7 November 2026: removed an unsourced emissions figure. Score unchanged.
- Scored 197 September 2026
Initial score 19 (score-company publish)
What evidence is Protein Works's score based on?
12 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
“Runcorn-based Protein Works operating under Class Delta Ltd has now seen double-digit revenue growth for a fifth consecutive year.”
“From a cutting-edge food manufacturing facility and global fulfilment centre to its technology and digital marketing platforms”
“Protein Works is a British functional food brand that makes protein shakes, meal replacements, complete meals, snacks and supplements.”
“Protein Works in Runcorn has seen a 39.4 per cent jump in turnover, reaching £42.8 million for the fiscal year ending August 31, 2023.”
“record-breaking 2024, which saw the firm chalk up best-ever profits on the back of turnover rising 40 per cent, and drive a 20 per cent increase in staff numbers.”
“No sustainability or nature policy content found on this page per verified URL list.”
“Addressing deforestation is now becoming a mainstream commercial imperative as the world responds to climate change and biodiversity loss.”
“The Protein Works, has made its protein powder packaging entirely recyclable.”
“The SBTi enables companies and financial institutions worldwide to play their part in combating the climate crisis.”
“Protein Works is a multi-award-winning functional lifestyle nutrition brand based in the Northwest.”
“InfluenceMap has been working closely with investors to fact-check company disclosure on climate policy engagement since 2017.”
If you believe a source has been misread or a newer version exists, submit a challenge.
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How does Protein Works compare with other food & beverage (non-meat) companies?
Protein Works sits at the bottom of the food & beverage (non-meat) pack.
Among the 51 major food & beverage (non-meat) brands we've scored, Protein Works sits 51st of 51.
Who scores higher in Food & Beverage (non-meat)?
The 3 companies in the sector scoring nearest above Protein Works.
Deliciously Ella publishes a sustainability page but discloses no quantified emissions data, targets, or formal reporting.
See the breakdown →Pukka publishes no current emissions figure: its last, 15,624 tCO2e for 2019, is outside the assessment window, so the size deduction for a missing footprint (0.70x) applies.
See the breakdown →Which companies moved this week, and why.
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