Brompton is a British bicycle manufacturer founded in 1976, headquartered in Brentford, specialising in lightweight folding bikes.
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Brompton has built credible climate governance and waste reduction programmes backed by B Corp certification, but its emissions trajectory worsened in FY2024 due to e-bike mix and air freight. Supply chain dominates footprint at 97%, yet Scope 3 targets remain intensity-based rather than absolute. A controversial new factory approved over Kent Wildlife Trust objections signals unresolved nature risks.
Brompton Bicycle scores 51/100 (Making progress) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified May 2026.
That places Brompton Bicycle joint 126th of 847 companies scored, and joint 3rd of 33 in Electronics / Hardware.
Where Brompton Bicycle sits among electronics / hardware peers.
Among the 33 major electronics / hardware brands we've scored, Brompton Bicycle is tied =3rd of 33, with 2 others.
Its three lowest-scoring questions, and what the evidence didn't show.
Scope 3 target is intensity-based (per bike sold), not absolute.
The full reasoning is in the ten questions below.
Scope 3 target structured per-bicycle, not absolute.
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 Transparency & Accountability and Controversies & Red Flags (7/10, 7/10). Weakest on Emissions Trajectory and Nature & Biodiversity Impact (4/10, 4/10).
The 2 companies in the sector scoring nearest above Brompton Bicycle.
Fairphone has built genuine climate and circularity credentials: 48% absolute emissions cuts since 2022, SBTi-validated net-zero targets, 100% e-waste neutrality, and third-party audited KPIs.
See the breakdown →Computacenter has delivered genuine Scope 1 & 2 carbon neutrality since 2022 and holds SBTi-validated targets.
See the breakdown →Brompton Bicycle's score has been reviewed 2 times and currently stands where it started, at 52.
Session 2a cleanup: recomputed performance from sum(questions[].score). performance 57→56, score 52→51.
Initial score at platform launch
The formula and all 10 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
If you believe a source has been misread or a newer version exists, submit a challenge.
Brompton is a British bicycle manufacturer founded in 1976, headquartered in Brentford, specialising in lightweight folding bikes. Listed on the London Stock Exchange and B Corp certified, it operates a primary factory in Greenford and is expanding to Ashford. Known for design longevity and repairability, it competes in the premium folding segment globally.
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