“Can a small UK challenger carve out a 'digital private bank' niche for mass-affluent consumers?”
220 Bank was founded in 2019 in Cardiff, UK as a self-described 'digital private bank' targeting UK consumers. As of the most recent public listing it had ~85,000 customers and 11-50 employees, and was reported to still be in beta. Public disclosure of its underlying finance stack is essentially non-existent.