10 cities that are rapidly becoming major financial centres

The world's biggest financial sectors feature some stalwarts - like New York, London and Tokyo - that have stayed way at the top of any rankings for decades.

But there are also dozens of challengers in the developing world that are giving the giants a run for their money, and are giving international investors access to some of the world's fast-growing financial markets.

Some of the fastest-growing are in east Asia, the Middle East and Africa.

We took the Global Financial Cities Index released for 2015 and compared it to the same publication when it was released five years ago, to find out which of the hubs are moving up the ranks most quickly.