Digital banking startup Revolut joins "unicorn" club

Revolut CEO Nikolay Storonsky.
Revolut CEO Nikolay Storonsky. Photo by Eric Piermont/AFP/Getty Images

Revolut, a London-based digital banking startup, raised $250 million in new funding at a $1.7 billion post-money valuation.

Why it's a big deal: Revolut's growth is astounding, even within the context of London's burgeoning digital banking sector (e.g. TransferWise, Monzo, etc.).