The Grey Plaque Scheme

London’s air is so polluted that it routinely exceeds legal yearly levels before the end of January. We were worried. So we hung grey plaques in some of London’s most polluted locations to make the invisible threat visible. Journalists, campaigners and thousands of concerned ordinary Londoners shared it on Twitter. 

The project was covered by The Guardian, The Times, the London Evening Standard and BBC World Service, and top London PR agency Taylor Herring also made the Grey Plaque Scheme their PR Stunt of The Day