Might I heartily recommend listening to the latest edition of The Food Programme on Radio 4 which is about the Fife Diet, a diet which involves sourcing your food exclusively from local sources.
From the BBC site: “Cheap food, it seems, is a thing of the past and change is coming to our food system, whether we like it or not. Should Britain feed itself? Can Britain feed itself?
From Sunday they’ll have the second part of the programme, which will look at the subject from a national public policy perspective.