Halma sustainability score: 51/100
Halma is a UK-listed diversified technology group manufacturing safety, environmental monitoring, and healthcare equipment across 45+ subsidiaries globally. Founded 1894, headquartered in Amersham, it serves industrial, defence, and life science sectors with sensors, analytical instruments, and diagnostic devices.
Head office United KingdomStaff ~8,000Revenue ~£2,248MWebsite ↗
Halma has cut operational emissions 64% since 2020, but total footprint rose 2% in FY2025 because Scope 3 (99% of emissions) increased. Renewable electricity hit 86% via unbundled certificates, not additionality. Supply chain emissions lack formal supplier reduction programmes.
Halma scores 51/100 (Making progress) 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 August 2026.
That places Halma joint 131st of 934 companies scored, and joint 4th of 37 in Electronics / Hardware.
What is Halma doing well, and where does it fall short?
Strongest on Controversies & Red Flags and Carbon Footprint: Operations (8/10, 7/10). Weakest on Nature & Biodiversity Impact and Carbon Footprint: Supply Chain (4/10, 5/10).
Where Halma lost points
For each question that lost points, the evidence our public rubric looks for that we didn't find.
- Emissions from its own operations7/10Its own emissions aren't independently verified or tracked over several years.
- Emissions from its supply chain5/10Most of its supply-chain (Scope 3) emissions aren't measured.
- Whether its emissions are falling6/10No consistent fall over several years across its operations and supply chain.
- How clean its energy is6/10Less than 90% of its energy shown to be renewable.
- Its effect on nature4/10Its effect on nature isn't measured or independently verified.
- How it uses materials and handles waste5/10No measurable waste or recycling targets reported publicly.
- Its effect on water5/10No measured water footprint with reduction targets.
- Its climate targets6/10Its targets aren't validated by 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 Halma's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleWhat evidence is Halma's score based on?
10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
70% of them were published by Halma itself; the rest come from independent sources.
“Scope 1 (4,128 tCO2e), Scope 2 (2,599 tCO2e market-based)”
“Independent limited verification of Halma's Scope 1 and Scope 2 reported emissions”
“Reported across 8 of 15 GHG Protocol Scope 3 categories”
“Scope 3 emissions, which increased by 2% last year and increased significantly since 2017”
“Reduced Scope 1 and 2 emissions by 64% from 2020 levels, surpassing its 2030 target”
“renewable electricity tariffs (largely backed by Energy Attribute Certificates (EACs)) and unbundled EACs, accounting for 94% of the total”
“sustainability agenda is led by our Chief Sustainability Officer, who has principal responsibility for our sustainability activities and policy”
“we have reallocated the 5% weighting previously allocated to energy productivity to EVA”
“33 sites which operate in areas of 'extremely high (>80%)' or 'high (40-80%)' baseline water stress”
“exploring utilising recycled material, reducing packaging, contributing towards the circular economy”
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How does Halma compare with other electronics / hardware companies?
Where Halma sits among electronics / hardware peers.
Among the 37 major electronics / hardware brands we've scored, Halma is tied =4th of 37, with 1 other.
Who scores higher in Electronics / Hardware?
The 3 companies in the sector scoring nearest above Halma.
Fairphone tracks emissions across operations and supply chain with third-party assurance, but total emissions rose 78% year-on-year despite 41% sales growth, and it missed its 12% 2025 reduction target.
See the breakdown →Vaisala's total footprint fell 11% in 2025 to about 92,000 tCO2e after three flat years, and all its purchased electricity is renewable.
See the breakdown →Computacenter has delivered genuine Scope 1 & 2 carbon neutrality since 2022 and holds SBTi-validated targets.
See the breakdown →Which companies moved this week, and why.
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