welshnwilling:I'm sure if the truth be told, they are far more interested in our production costs than our carbon footprint. By finding out fertilizer, feed and fuel usage etc etc and number of lambs and cattle sold they will have a pretty good idea of our costs
Well spotted wnw. You have it in a nutshell !
I do believe however that they started out, like many others, by being fooled by the notion that the pricing mechanism did not take full account of the 'costs' to the planet of resource extraction.
In economic terms there is a germ of truth in the idea that price does not give the buyer ALL the information about scarcity, but it is a germ only, and to go from that to the assumption that you could develop a totally different method of pricing was silly.
Tesco have now acknowledged that.