Funding from institutional investors Toscafund and Lansdowne Partners.
It is understood Lansdowne Partners has paid GBP10 million for around 2pc while Toscafund invested GBP30 million in return for 7pc.
Aldermore, which is considering a stock market flotation, will use the money to meet demand from retail customers and small to medium-sized enterprises (SMEs).
It now has more than 100,000 retail customers, with deposits of GBP3.3 billion and lending to SMEs and homeowners reaching GBP3.4 billion.
Chief executive Phillip Monks said: “The new funds provide us with the opportunity to do even more to champion Britain's small businesses, the lifeblood of our economy. Our strong capital position also enables us to look at a number of new product and service launches to further meet the needs of our customers."
The bank is backed by AnaCap Financial Partners and already supported by Morgan Stanley Alternative Investment Partners, Goldman Sachs Asset Management, Ohio Public Employees Retirement System and Honeywell Capital Management.
You can find more information on the various banks and factoring companies on the main website.