Revolut’s “number one” priority is becoming a fully fledged UK lender, the fintech’s boss said, as the company pledged to invest £3b in the country. The investment promise came as Revolut unveiled expansion plans on Tuesday that would see the London-headquartered fintech expand into 30 new countries by 2030 as part of a push to reach 100m users. It currently has more than 65m customers globally.