"“Cash I think in ten years time probably won’t (exist). There is no need for it, it is terribly inefficient and expensive,” John Cryan, chief executive of Deutsche Bank, said during a discussion on financial technology, known as "fintech".

Other predictions made during the panel discussion at the World Economic Forum in Davos included James Gorman, chief executive of Morgan Stanley, who warned against "hysteria" surrounding fintech.

"This is going to unfold over many years in many ways.”

Dan Schulman, CEO of Paypal, flagged cybercrime as the biggest threat to the financial industry.

"The big next stress is that the financial system is going to be hacked for one or two days”.

(Reporting by Carmel Crimmins; Editing by Alexander Smith)