The number of sites identified as potentially having been polluted with banned cancer-causing “forever chemicals” in England is on the rise, and the Environment Agency (EA) says it does not have the budget to deal with them.

A former RAF airfield in Cambridgeshire and a fire service college in the Cotswolds have joined a chemicals plant in Lancashire and a fire protection equipment supplier in North Yorkshire on the agency’s list of “problem sites” for per- and polyfluoroalkyl substances (PFAS).

In total, according to a report compiled for the agency, there could be more than 10,000 locations in England contaminated with PFAS – substances that have been linked to a wide range of diseases including cancers, and which do not break down in the environment, earning them the nickname “forever chemicals”. But to date the agency is only taking action on four sites.