Digital banking startup Revolut joins "unicorn" club

It claims to have doubled its customer base to two million in the past five months and reports 250,000 daily active users — all just three years after initial product launch.

• Investors: DST Global led, and was joined by Index Ventures and Ribbit Capital.
• Bottom line: "Revolut offers most of the features you’d expect of a current account, including physical and virtual debit cards, direct debits and money transfer. Its 'attack vector' (to borrow Monzo’s Tom Blomfield’s phrase) was originally low exchange fees when spending in a foreign currency, which undoubtedly fueled much of the startup’s early growth." — Steve O'Hear, TechCrunch