Library of Things sustainability score: 55/100
Leading practice starts at 60. The highest score on SINK is 71.
Library of Things is a UK-based SaaS platform enabling shared access to tools and appliances through self-service kiosks in libraries and community spaces. Founded in 2019 and based in London, the company operates roughly 20 kiosks and extends product lifecycles through borrowing rather than purchase, primarily serving the London market.
Founded 2019Head office GBStaff ~20Revenue ~£800KWebsite ↗
Library of Things has negligible operational emissions and structurally reduces consumption through product sharing. Transparency is above-average for an SME through mission-lock governance and annual impact reporting. Critical gap: no formal operational emissions targets, supply chain quantification, or energy strategy—and academic critique questions whether sourcing new items rather than utilising existing goods contradicts sustainability claims.
Library of Things scores 55/100 (Making progress) 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 June 2026.
That places Library of Things joint 56th of 1,023 companies scored, and joint 9th of 69 in SaaS / Digital Services.
What is Library of Things doing well, and where does it fall short?
Strongest on Controversies & Red Flags and Resource Use & Waste (8/10, 7/10). Weakest on Carbon Footprint: Operations and Carbon Footprint: Supply Chain (3/10, 3/10).
Where Library of Things 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
- Emissions from its own operationsPublish emissions figures for its own operations, even an estimate from energy bills.
- Emissions from its supply chainAssess where its supply-chain emissions come from.
- 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 chain3/10No assessment of where its supply-chain emissions come from.
- Whether its emissions are falling3/10No evidence its emissions are falling, not even from energy bills or mileage.
- How clean its energy is3/10No 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 waste7/10No verified figures for reuse and recycling across the business.
- Its effect on water5/10No measured water footprint with reduction targets.
- Its climate targets4/10Its targets aren't science-based or committed to the Science Based Targets initiative.
- How openly it reports7/10No annual impact report, or no pay linked to climate targets.
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 Library of Things's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleHas Library of Things's score changed?
Library of Things's score has been reviewed 2 times and currently stands where it started, at 55.
- 55 → 558 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.
- Scored 557 November 2026
Correction, 7 November 2026: removed an unsourced emissions figure. Score unchanged.
What evidence is Library of Things's score based on?
10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
60% of them were published by Library of Things itself; the rest come from independent sources.
“More than 6,000 people borrowed 10,000 Things in 2022/23 avoiding hundreds of tonnes of waste and carbon emissions”
“They have a team of 20 staff and an annual turnover of £800,000.”
“This calculation does not account for emissions and embedded carbon in the product packaging, shipping and distribution processes.”
“We've partnered with BOSCH, STIHL, Kärcher, Vango, The North Face and more.”
“We now have almost 40,000 members, and the service's been used nearly 60,000 times.”
“By borrowing, renting or sharing products instead of buying new ones, we can protect our fragile ecosystems.”
“Work flexibly, from the office or remotely.”
“Borrowing prevents CO2 emissions (CO2e) firstly through fewer items needing to be manufactured in the first place.”
“The LoT sources new items for its inventory, thus not aiming to utilise the idling capacity of existing products.”
“Average number of employees, including directors, during the year was: 17 (2025: 24) … These accounts have been prepared and delivered in accordance with the provisions applicable to companies subject to the small companies regime.”
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How does Library of Things compare with other saas / digital services companies?
Where Library of Things sits among saas / digital services peers.
Among the 69 major saas / digital services brands we've scored, Library of Things is tied =9th of 69, with 2 others.
Who scores higher in SaaS / Digital Services?
The 3 companies in the sector scoring nearest above Library of Things.
ServiceNow has cut Scope 1&2 emissions 80% since 2019, exceeding its SBTi target, and maintains 100% renewable electricity.
See the breakdown →GoTo reports Scope 1, 2 and 3 emissions without third-party assurance.
See the breakdown →Palantir discloses carbon emissions annually with GHG Protocol methodology but refuses third-party verification, undercutting credibility.
See the breakdown →Which companies moved this week, and why.
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