Landshare

If you're worried about the potential effects of air pollution on food that you're growing or foraging, there has been a survey done by the Ministry of Agriculture, Fisheries and Food (MAFF) which might be useful.

The findings of the MAFF study were that the estimated dietary exposures were within relevant guidelines on safe exposures, even for above average adult consumers of wild foods.

http://archive.food.gov.uk/maff/archive/food/infsheet/2000/no199/199multi.htm