GSK has credible Scope 1+2 reductions and strong nature commitments, but Scope 3—93% of emissions—is stalled. The company is half the pace needed to hit its 2030 target and sits on ambiguous trade association memberships that undermine climate positioning.
Same formula for every company. No curve. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleStrongest on Carbon Footprint — Operations and Nature & Biodiversity Impact (8/10, 8/10). Weakest on Emissions Trajectory and Resource Use & Waste (4/10, 5/10).
16 sources used in this assessment. All publicly available. Each row shows which rubric questions it informed.
If you believe a source has been misread or a newer version exists, submit a challenge.
Among the 11 major healthcare / pharmaceuticals brands we've scored, GSK is tied =2nd of 11, with 2 others.
Score history begins 4 April 2026.
As GSK's score updates, the trajectory will appear here.
We're backfilling historical scores for FTSE 100 and S&P 100 companies over the coming weeks.
Every challenge is published. We'd rather be corrected than wrong — that's the whole point.
No challenges submitted yet. If you have evidence that contradicts this score, you can challenge any question above — cite a public source and we'll review it.
GlaxoSmithKline is a London-based pharmaceutical company specialising in prescription medicines, vaccines, and consumer healthcare. With 99,300 employees, it ranks among the top-three global pharma players. GSK faces typical sector pressures: supply-chain emissions, inhaler propellant impacts, and API manufacturing footprints.
Comparable pharma scale and Scope 3 dominance; peer on nature and climate ambition
View breakdown →Direct pharmaceutical competitor with similar supply-chain and manufacturing emissions patterns
View breakdown →Pharma peer on science-based targeting and early nature validation; contrasting pace on decarbonisation
View breakdown →Industry peer with comparable scale and SBTi commitments; useful transition pathway benchmark
View breakdown →Email alerts when a rubric question is verified, a challenge is resolved, or the overall score changes.
One email, every Sunday. Score changes, new research, the stories behind the numbers. Free.
No spam. Unsubscribe in one click.
Readers and institutions support our work. Companies can pay to submit evidence we couldn't find. Neither type of payment changes a score.