As of January 2017 the Financial Conduct Authority (FCA) has fully authorized ten peer-to-peer lenders, according to AltFi, while the remainder of the industry operates with interim approvals; AltFi speculates on some of the characteristics of the authorized and interim lenders; of the authorized firms, Folk2Folk is the largest with originations of approximately 100 million British pounds ($120.44 million); the UK’s largest platforms including Zopa, RateSetter and Funding Circle still have not been approved; loans from these lenders are primarily unsecured; characteristics identified by AltFi as issues for the FCA include: pre-funding, collective investment, auto-investing and institutional investment. Source