Claim: A series of images show chemtrails around Heathrow airport.
Fact-check: Lines reportedly seen in the sky around Heathrow are contrails, not chemtrails - Full Fact
Verdict: these lines are actually contrails, caused by water vapour produced by aeroplane engines freezing at high altitude.
Organisation: Full Fact
Author: Hannah Smith
Date published: 2023-01-27T00:00:00