In announcing its plans to get Cornish farmers to deliver straight to its stores, Asda has illustrated how ridiculous central distribution systems are ('Asda scheme cuts road miles for veg', The Grocer 19 August, p62). If a scheme involving just three farms can save 6,000 road miles a month, imagine how many unnecessary miles food is currently travelling.

This scheme is a step in the right direction, but Asda must expand it across the whole country if it really wants to reduce environmental impact. Other­wise this will prove to be nothing more than supermarket greenwash.

All the supermarkets need to do more to make local produce available. When a shopper in Edinburgh buys a Scottish strawberry, they shouldn't have to wonder whether it's been trucked to England and back first.