OSB Group grew its loan book to £25.9bn in 2025, a 3.2% annual rise, as the bank said it delivered a “resilient” performance in its latest full-year results.

The group revealed this was supported by a 19% growth in originations to £4.7bn, with a focus on returns and diversification into higher-yielding sub-segments.

OSB, which operates through a variety of financial services brands including Precise Mortgages, Kent Reliance for Intermediaries and InterBay, was announcing its annual results covering the 12-month period to 31 December 2025.

The group reported a 9% dip in pre-tax profit to £382.5m for 2025, down from £418.1m in 2024, which it said was due to an impairment charge compared to an impairment credit in the prior year, as well as an increase in fair value losses and higher administrative expenses.

OSB still increased its total assets by 3% to £31.1bn in the year, while retail deposits grew by 2% to £24.3bn.

“The group delivered resilient financial performance in the first year of the transition period, which was in line with our 2025 guidance,” CEO, Andy Golding, said.

“The loan book diversification has been gaining momentum and in 2025, combined originations in our higher-yielding sub-segments grew by 53%. The buy-to-let gross loan book represented 68% of the group’s total gross loan book, a reduction from 70% a year ago, on track with our 2029 target.”

For the 2026 financial year, OSB said it is expecting its net loan book growth to be “broadly similar” to its 2025 outcome.

The bank also called return on tangible equity (RoTE) is a “key focus”, and revealed it is expecting mid-teens RoTE in 2027 and 2028, increasing to the top end of the mid-teens in 2029.

Golding added: “The group is well-capitalised, with strong liquidity and a high-quality secured loan book. We are focused on making progress through the transition period to deliver on our medium-term aspirations, prioritising positive outcomes for our stakeholders and strong returns for our shareholders.”

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