There is fierce competition every year for a space on Z/Yen's Global Financial Cities Index, and 2015 is no different.
The ranks give cities a combined score based on five main factors: 
  • Business environment
  • Financial sector development
  • Infrastructure
  • Human capital
  • Reputational and general factors.
There was a huge reaction when New York dethroned London as the world's top financial hub last year — but has London managed to take the crown back? And how are Asia's growing megacities doing as China's rapid growth cools?