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Tesco needs to take a look at where others have failed. Coop nearly went bust because they didn't feel the need to have professionals in the senior management team.

In desperation they sold a grocery retailer's best asset. If they cannot make vertical integration work they don't deserve to be in business.

Dave Lewis should grasp vertical integration as fast as possible to shorten supply chains and make them transparent. Working in partnership with suppliers and applying Fairtrade principles to UK suppliers will pay dividends.

We, of course, could really help with vertical integration. One day retailers will be seeing their hardest to transport and most perishable produce growing on their rooftops. It should come as no surprise that 60% of bagged salads end up wasted - they are 3 days old by the time they reach the store. Together with us Tesco could give those 3 days to the consumer - and have a better quality product at a lower cost and a much smaller carbon footprint.