Open banking-driven credit scoring is gaining serious traction among UK lenders, with new figures from the Open Banking Implementation Entity showing that over 12 million consumers have now connected at least one bank account to a third-party financial service. Lenders including Abound, ClearScore and Credit Kudos are using real-time transaction data to build affordability profiles that go far beyond the binary pass-fail models of traditional credit reference agencies. The approach is particularly significant for the estimated 5.8 million UK adults whom Experian classifies as having thin or invisible credit files.

James Alexander, chief executive of the Innovative Finance ISA platform, said that open banking scoring was "the single most important development in UK consumer lending in a decade." Early evidence suggests that lenders using transaction-based models experience default rates roughly 25% lower than those relying solely on credit bureau data, according to research published by the University of Edinburgh's Centre for Financial Innovation. The models are especially effective at identifying stable income patterns among gig economy workers and self-employed individuals.

Despite the promise, challenges remain. Privacy advocates have raised concerns about the breadth of data being shared, and the FCA has signalled that it will issue new guidance on the use of open banking information in credit decisions by early 2026. Martin Lewis of MoneySavingExpert urged consumers to "check exactly what data you are sharing and with whom" before connecting accounts. Industry participants are broadly supportive of clearer rules, arguing that regulatory certainty will encourage mainstream lenders to adopt the technology at scale.