Friends of the Earth has been advertising an air pollution monitoring kit. It appears to be aimed at individuals rather than local Friends of the Earth groups. We’d recommend as many local members sign up for this kit so we can monitor air pollution in Sheffield. See this link for more details. It takes less than a minute to sign up and it's a great opportunity to become a citizen scientist.
We are waiting for more information from Friends of the Earth about what we can do to formally start this campaign rolling.