Eleven start-ups took to the stage at a venue inside London's O2 arena on Monday to pitch their companies in front of investors and enthusiasts.
Hosted by Barclays and Techstars, one of the world's largest start-up accelerators, the event aimed to identify the next big companies, all with a financial technology or "fintech" focus.
London has become one of the hottest hubs for fintech not only in Europe but the world.
So could this group become future "unicorns" – or companies valued over $1 billion? CNBC spoke to four of the most innovative singled out by industry experts.