Tesco is trialling a new concept store for city centre sites with limited space at London's Canary Wharf. The refitted Tesco Metro will serve as a prototype for smaller format Tesco stores in Taiwan and South Korea, said a spokesman. The snake' queuing system at the 12,000 sq ft store can cope with 450 customers every 15 minutes by directing customers in a single queue to the next available till. Plasma screens showing the latest financial news from Reuters and Bloomberg have been installed for customers in the queue, with additional screens featuring Sky and CNN set up by the news stands at the entrance. Central to the new concept is a chameleon' shelf-filling technique, whereby stock is changed to cater for differing requirements at different times of the day. Shelving is also slanted to reduce congestion. Units offering sandwiches at lunchtime will stock ready meals in the evening. Store manager Tina Mitchell said: "We're using the latest technologies to bring our customers exactly the sort of superstore they need in their skyscraper world. It's the first of its type in the world." {{NEWS }}