Bioregional is a London-based sustainability consultancy and registered charity founded in 1994, with 31 employees and £2.5m annual revenue.
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Bioregional has cut its Scope 1 and 2 emissions by 89% since 2018/19, but Scope 3, about 99% of its 139.7 tCO2e footprint and estimated mainly from spending, fell only 9.6%, largely by cutting travel. Progress on its goal for key suppliers to set science-based targets is not reported, and no nature baseline or current water data was found. Its small office footprint limits direct impact, and a documented performance gap at its flagship BedZED project weighs on its credibility.
Bioregional Development scores 56/100 (Making progress) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified October 2026.
That places Bioregional Development joint 34th of 847 companies scored, and joint 6th of 16 in Consulting / Professional Services.
Where Bioregional Development sits among consulting / professional services peers.
Among the 16 major consulting / professional services brands we've scored, Bioregional Development is tied =6th of 16, with 1 other.
Its three lowest-scoring questions, and what the evidence didn't show.
No gas use post-2022, but landlord tariff composition not disclosed.
Scope 1+2 down 89% from 2018/19; Scope 3 down 9.6%; business travel down 72% but short of internal 75% target.
No published baseline, quantified nature footprint, or target detail released.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Targets & Commitments and Transparency & Accountability (7/10, 7/10). Weakest on Energy Source and Emissions Trajectory (3/10, 4/10).
The 3 companies in the sector scoring nearest above Bioregional Development.
Slaughter and May has set science-backed net-zero targets and reports third-party verified emissions, but reported total emissions rose 48% year-on-year due to methodology changes and refurbishment.
See the breakdown →EY has cut absolute emissions 40% since FY19 despite growing 41% in revenue, reaching 88% renewable electricity.
See the breakdown →Experian has reduced operational emissions 82% since 2019 and holds SBTi-validated targets, but Scope 3 emissions are rising despite methodology improvements.
See the breakdown →Bioregional Development's score has moved from 57 to 56 across 2 recorded reviews, down 1 point.
correction: re-sourced 2026-10-16 (live records failing current gates, zero coverage). Re-scored under current rules from the filed accounts (OCR-verified) and independent coverage; Scope 3 completeness exception documented. (Owner exception: Scope 3 completeness guard skipped — filed accounts state the 139.7 t total is ~99% Scope 3.)
Initial score at platform launch
The formula and all 11 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale11 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
“Scope 1 and 2 emissions fell by 89% since our 2018/19 baseline”
“In 2018/19 our carbon footprint (including scopes 1, 2, and 3) was 137 tCO2e.”
“Group of companies' accounts made up to 31 March 2026”
“require 50% of our key suppliers (measured by procurement emissions) to have science-based targets by 2025”
“80.6 tCO2e in 2023-24, a decrease of 50% from our 2018/19 baseline”
“Environment/conservation/heritage”
“Bioregional Development Group commits to reduce scope 1 and scope 2 GHG emissions 50% by 2030 from a 2018 base year”
“It faced problems such as overheating and having to switch from CHP to gas which undermined its sustainability targets.”
“BedZED eco-village is the real deal - no greenwashing to be seen or heard here.”
“Retrofit Automation Tool by Bioregional aims to accelerate retrofit planning by turning complex, messy datasets into clear decarbonisation pathways”
“Completing the list was a retrofit automation tool by Bioregional, which aims to simplify the retrofitting planning process.”
If you believe a source has been misread or a newer version exists, submit a challenge.
Bioregional is a London-based sustainability consultancy and registered charity founded in 1994, with 31 employees and £2.5m annual revenue. It develops frameworks and tools for environmental planning, retrofit, and one-planet living, working with housing bodies, local authorities, and businesses across the UK.
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