UK Challenger Banks Sustain Growth in 2025, but Momentum Eases Amid a Tougher Market

Challenger, specialist and digital banks based in the UK reported continued but slower year-on-year growth in 2025, according to new EY analysis of results across the sector year to date, which represent 56% of the total assets of 52 UK challenger banks.

Loan growth across the sector softened in 2025, falling to 4.5% from 8.9% in 2024, with customers prioritising debt repayment over new loans amid macroeconomic uncertainty, while deposit growth fell to 6.7% from 12.3% over the same period. Property development lending was subdued early in the year, though a cautious recovery came through in the latter half of FY25, while buy-to-let and small-and-medium-sized enterprise (SME) lending remained broadly steady. 

The analysis indicates improved efficiency, suggesting challenger banks are responding to macroeconomic challenges with discipline and tighter operational efficiency. Net interest margin rose to 2.9% in 2025, up from 2.7% in 2024, and cost-to-income improved, dropping to 58.2% in 2025 from 65.0% in 2024. Pre-tax profit growth rose to 0.5%, from -1.5% in 2024 despite a demanding economic backdrop, driven by robust income from new business, effective cost control and stable credit losses. 

Dan Cooper, EY UK & Ireland Head of Banking and Capital Markets, comments: “The UK’s challenger and specialist cohort of banks are at an inflection point. Whilst this segment benefitted from rapid scaling and balance sheet growth in prior years, heightened competition and economic headwinds mean that these banks are operating in a very different landscape. 

“While loan growth was harder to come by in 2025, these banks are clearly continuing to trade well, and there are signs the sector is reaching a new level of maturity with stronger profit margins, and improved efficiencies. Looking ahead, as wider economic growth continues to moderate, the mid-sized banks that continue a disciplined strategy of prioritising sustainability and resilience over volume should be well placed to continue growing in the medium-term.”

Capital allocation reflects balance-sheet discipline

Loan loss provisions for UK challenger banks increased by 18.6% year-on-year in 2025, largely reflecting higher reserve releases in 2024, as well as motor finance redress provisions in relevant parts of the market. Banks remained well-capitalised, with a median Common Equity Tier 1 ratio of 15.5%, sitting comfortably above the regulatory minima. Return on equity declined slightly to 7.1% from 7.5%, primarily reflecting higher levels of capital held on balance sheets. 

Ian Cosgrove, EY UK Head of Challenger and Specialist Banks, comments:“The 2025 analysis reflects a longer-term recalibration across the sector. Initially established to disrupt the mainstream lending market, many challengers have since evolved, either by being acquired by larger incumbents or shifting into more defined niches such as commercial lending and specialist mortgages. While the sector is continuing to deliver strong growth, it’s becoming harder to sustain by volume alone.

“Amid fierce competition, many challengers are pursuing new routes to scale through targeted M&A, diversification and consolidation. Strong capital buffers, consolidation and capability-led transactions will likely be defining features of the segment’s continued growth and evolution in 2026 and beyond.”