Londoners claim toxic air from gasworks damaging their health

Southall residents link redeveloped site to poor health, but developer says it complies with regulations

Residents in Southall are calling on the government to urgently investigate the health impact of the redevelopment of an old gasworks in light of research suggesting the mainly south Asian community is highly susceptible to air pollution.

For a year the Guardian has followed the Clean Air for Southall and Hayes (Cash) campaign as they demanded answers from Ealing council, statutory bodies and scientists as to whether a petrol-like" odour which they say emanated from the site is causing symptoms such as breathing problems, nausea and mental confusion - and serious diseases. They want to know what will be done to eliminate future risks over the 25-year regeneration project.