Challenger bank
From ACT Wiki
A relatively small, sometimes newer, retail bank which competes with larger, often older banks.
Challenger banks would generally tend to service smaller corporate clients, if any, rather than larger ones.
In the UK, challenger banks include, among others: Aldermore Bank, Charter Savings Bank, Close Brothers, Hampden & Co., Metro Bank, One Savings Bank, Paragon Bank, Sainsbury's Bank, Secure Trust Bank, Shawbrook Bank, Tesco Bank.
