Is cash still king?

In a world where we can simply smile to pay, and where machines put us on the best deals, our relationship with money is changing.

In a battle for control over how we borrow and where we spend, will two giant pillars of finance – banks and cash – be toppled by technology upstarts? And could consumers end up paying a heavy price?

And in this new digital world, what is happening to cash?

This is part of the BBC Disruptors series, read the full article here.

Graphic artists: William Prudence; Ian Paul Joyce

Sources: UK Cash & Cash Machines 2017, UK Finance; Red Book statistical update 2017, Bank for International Settlements.