Challenger banks have maintained their dominant position in lending to small and medium-sized enterprises (SMEs), but fresh data suggests their rapid ascent may be levelling off as major high street lenders begin to reassert themselves.
According to new analysis from the British Business Bank, challenger banks accounted for 60 per cent of SME lending in 2025, unchanged from the previous year. The figure marks only the second time in more than a decade that their market share has not increased, raising questions about whether the post-financial crisis disruption of the SME lending market has reached a plateau.
The shift in lending dynamics has been one of the defining structural changes in UK banking since the 2008 financial crisis. Traditional lenders including Lloyds Bank, NatWest, Barclays, HSBC and Santander once dominated SME finance, accounting for 61 per cent of lending as recently as 2012. However, regulatory changes, technological innovation and dissatisfaction among smaller businesses created space for a new generation of lenders to emerge.
Challenger banks such as Starling Bank, Allica Bank and Oxbury Bank have since built significant market share by offering more flexible lending models, faster decision-making and digital-first services tailored to SME needs.
Yet the latest data suggests momentum may be stabilising. Louis Taylor, chief executive of the British Business Bank, said it remains unclear whether challenger banks have reached a natural ceiling or whether incumbent lenders are beginning to reclaim ground.
“There is some willingness for the big banks to staunch that market share diminution,” Taylor said, noting that traditional lenders are increasingly targeting profitable SME segments such as deposits, transaction banking and foreign exchange services.
Recent activity supports that view. Lloyds, for example, announced plans to make £9.5 billion available to SMEs this year, while a consortium of major banks has committed £11 billion to support SME exporters. These moves signal a renewed focus on a segment that high street banks were widely criticised for neglecting in the aftermath of the financial crisis.
Despite this, challengers and non-bank lenders continue to dominate the broader SME funding ecosystem. The report found that non-bank lending and challenger banks together now account for 68 per cent of total SME lending, underlining the diversification of funding sources available to businesses.
Alternative finance providers have become particularly influential. Funding Circle remains the largest non-bank lender, holding a “low-to-mid 50 per cent” share of business loans by volume. The growth of such platforms reflects a structural shift towards more fragmented, specialist lending models that cater to different risk profiles and business needs.
Overall lending activity has shown signs of resilience. Gross new SME lending rose by 9 per cent to £68 billion last year, making it the second-highest annual total in more than a decade. Repayments reached £63 billion, resulting in net lending of £4.6 billion — the first positive net figure since 2020.
However, beneath these headline figures, there are signs of underlying weakness. The total value of outstanding loans and overdrafts has fallen by 22 per cent in real terms since 2012, while the use of traditional overdraft facilities has dropped to a record low of £7 billion. Only 9 per cent of SME lending now comes from conventional bank loans.
Instead, businesses are increasingly relying on short-term and flexible forms of finance. Credit cards and overdrafts remain widely used, suggesting many firms are prioritising cashflow stability over long-term investment. Leasing has also grown in popularity, rising from 6 per cent of SMEs in 2012 to 13 per cent last year, particularly for equipment and machinery.
Loan approval rates have improved modestly, rising to 53 per cent in 2025 from 49 per cent the previous year, but they remain well below pre-pandemic levels of 74 per cent in 2019. This has driven greater reliance on intermediaries, with brokers facilitating £33 billion of SME lending last year, a 25 per cent increase on 2024.
The report also highlights persistent structural gaps in the market. Smaller loans, early-stage businesses and companies built around intellectual property continue to struggle to access finance, reflecting risk aversion among lenders and limitations in traditional credit assessment models.
“There are some holes in the system,” Taylor said, pointing to the referral scheme that requires banks to direct rejected applicants to alternative lenders. Because many applications are declined before reaching formal credit committees, businesses often miss out on this pathway altogether.
The broader picture is one of a maturing but still evolving market. Competition has intensified, keeping pricing competitive for low-risk lending, but borrowing costs remain elevated for higher-risk SMEs due to structural constraints and economic uncertainty.
For policymakers and industry leaders, the key question is whether the current balance represents a new equilibrium or simply a pause in an ongoing shift. While challenger banks have transformed access to finance over the past decade, the re-engagement of high street lenders suggests the competitive landscape is entering a new phase, one defined less by disruption and more by consolidation and coexistence.
In that context, the plateau at 60 per cent may not signal a peak, but rather a stabilisation point in a market that is still adjusting to a fundamentally different model of SME finance.
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Challenger banks hold 60% of SME lending as high street banks fight back
