Unit 1: Allocative efficiency in action: The changing face of the highstreet

http://news.sky.com/skynews/Home/Business/The-Changing-Face-Of-The-High-Street-Less-Banks-More-Betting-Shops/Article/201101315901136?f=rss

a) Using the definition of allocative efficiency, explain how the concept can be applied to the changing face of the high street