SINKScore sheet
Independent sustainability scoreHeathrow Airport
Airports / Transport Infrastructure · Hounslow, United Kingdom
41/100
Below expectations1st of 2 in Airports / Transport Infrastructure
Strongest
- Emissions from its own operations8/10
- Emissions from its supply chain7/10
Weakest
- Whether its emissions are falling2/10
- Its effect on water4/10
Evidence level
Full
Sources
17
Method version
v2.5.19
Date scored
21 October 2026
Scored out of 100 on the same ten questions as every company we score. Every source is listed on the live page. Fees pay for the review, never the result. Scores can go down as well as up.
Live score, reasoning and every source
sinkproject.com/company/heathrow-airportThis sheet shows the score on the date above. The live page is always current.