THE 20 MOST POWERFUL FINANCIAL CENTRES IN THE WORLD

LONDON – Twice a year, Z/Yen releases its Global Financial Centres Index (GFCI), and the latest for September 2017 is just out.

The survey gives 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 in 2013.

But the British capital regained its crown in 2015 and this year extended its lead despite the UK's looming departure from the European Union.

Check out all the other cities that made the cut: