A different way to put empty stores to use

There have been lots of ideas about how to use empty stores but few are as imaginative as this one.  Take an empty store in Hackney and use it as a farm to grow food. Chickens on the roof, mushrooms in the basement and fish farm on the ground floor. Even an indoor allotment!
http://www.springwise.com/retail/london-retail-space-world%E2%80%99s-farm-shop/