A new survey has estimated the worldwide online grocery market at £3.5bn. According to market research specialist, Datamonitor , the sector is set to become the biggest business-to-consumer sector. The report shows that the penetration of online sales into the overall grocery market remains small. In Britain, Internet grocery shopping accounts for just 0.4% of the market for food. In the US the rate is 0.33%, and in Germany and Italy it is 0.1% and 0.02% respectively. But web food shopping is forecast to grow rapidly. The Netherlands has the most developed market, but France is expected to have the highest growth rate in the next few months as national outlets like