With a new flagship store and enhanced services, a venerable shoemaker steps up its game. 

New Bond Street’s boutiques did not lack for foot traffic on a particular summer day earlier this year, but perhaps no shop on London’s famed thoroughfare was as lively that afternoon as Bally. Inside, on the store’s second level, clients gathered around as a master craftsman used various cloths to apply dye to men’s leather shoes. He was layering and achieving different textures in the way that an artist puts pa…