What OneSavings Bank does

OSB Group is a UK-listed specialist mortgage lender and retail savings bank headquartered in Chatham, Kent, operating through a multi-brand, multi-licence platform. The group serves underserved segments of the UK mortgage market through eight-plus specialist brands covering buy-to-let (Rely, Kent Reliance for Intermediaries, Precise), specialist residential (Precise, KRFI), commercial and semi-commercial (InterBay Commercial), bridging and developer exit, development finance (Heritable), and asset finance for SMEs (InterBay Asset Finance), while retail savings are raised through Charter Savings Bank (online and postal) and the Kent Reliance branch, postal and online network. As at year-end 2025, the group reported £25.9bn in net loans and £24.3bn in retail deposits, with a 15.8% CET1 ratio, a Moody's Baa2 senior unsecured rating (stable), and 2,489 employees across the UK and India.

The group's technology backbone was rebuilt in 2025 with a new flexible lending platform launched in November and underpinning the Rely brand, enabling data-led underwriting that can take a case from application to offer in as little as two hours, plus a new digital savings platform delivering fully digital onboarding and real-time instant deposits and withdrawals. Two PRA-authorised, FCA-regulated banking licences (OneSavings Bank plc firm reference 530504, and Charter Court Financial Services Limited) sit beneath a single listed entity, OSB GROUP PLC (London Stock Exchange: OSB), while wholly-owned OSB India (OSBI) in Bangalore and Hyderabad provides offshore support across marketing, propositions, operations, IT, risk, compliance, finance and HR.

The revenue model centres on net interest income from the specialist loan portfolio, funded primarily by retail deposits and supplemented by securitisation programmes, the EMTN programme, AT1 securities, legacy debt instruments and Bank of England Term Funding. Distribution is exclusively intermediary-driven for mortgage products, supported by a national sales team of expert underwriters applying flexible underwriting to complex cases that fall outside mainstream criteria (self-employed, adverse credit, limited-company BTL, semi-commercial, development). Retail savers are reached through digital, postal and branch channels, with 89% (Kent Reliance) and 85% (Charter Savings Bank) re-deposit rates evidencing stickiness in the funding base.

Name

OneSavings Bank

Legal name

OSB GROUP PLC

Website

https://osb.co.uk

Company type

Public

Founded year

1840

Operating status

Operating

Headcount range

251–500 employees

Short description

OSB Group is a UK-listed specialist mortgage lender and retail savings bank serving underserved UK market segments (buy-to-let, specialist residential, commercial, bridging, development and SME asset finance) through eight-plus brands, intermediated brokers, and a £25.9bn loan book.

Ownership category

akta.pro rank

Product category

Specialist Mortgage Lending

NAICS

Depository Credit Intermediation (5221), Savings Institutions and Other Depository Credit Intermediation (52218), Finance and Insurance (52)

SIC

Mortgage Bankers & Loan Correspondents (6162), State Commercial Banks (6022), Asset-Backed Securities (6189), Savings Institutions, Not Federally Chartered (6036)

akta.pro primary industry

Mortgage Loan Sales & Aggregation (Correspondent/Conduit Aggregators) (FSALAFAD)

akta.pro secondary industries

Mortgage-Backed Securities (RMBS/CMBS) (FSACACAB), Private Banking Lending (Securities-Backed, Real Estate, Structured Credit) (FSABADAE), Securitized Products (MBS/ABS/CMBS) (FSAAAHAE)

Keywords

• Specialist mortgage lending
• Buy-to-let mortgages
• Retail savings banking
• Development finance
• Asset finance

Headquarters

HQ city

Kent

HQ country

United Kingdom

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales, Others

Revenue model

1. Net Interest Income - Mortgage Lending: The Group earns interest income from its loan portfolio, including specialist mortgage lending (buy-to-let, residential, commercial, semi-commercial, development finance, bridging, and asset finance). Funded primarily through retail deposits (£24.3bn) and diversified funding including securitisation programmes and Bank of England Term Funding Scheme.
2. Retail Deposits / Savings: The Group attracts retail savings through Charter Savings Bank and Kent Reliance brands, offering savings accounts, ISAs, and bonds via online, postal, and branch channels. These deposits fund the lending activities.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

OneSavings Bank, part of OSB Group PLC, is a UK specialist mortgage lender offering buy-to-let, residential, commercial, semi-commercial, bridging, development and asset finance products through intermediary/broker channels. The Group also operates retail savings franchises (Charter Savings Bank and Kent Reliance) that fund lending activity, with mortgage products distributed via specialist sub-brands (Rely, Precise Mortgages, Kent Reliance for Intermediaries, InterBay Commercial, InterBay Asset Finance, Heritable Development Finance) targeting underserved segments of the UK mortgage market.

Product overview

OSB Group is a UK specialist mortgage lender and retail savings bank operating under a platform-plus-multiple-brands architecture. The group provides specialist lending products through brands including Rely Mortgages, Precise Mortgages, Kent Reliance for Intermediaries, InterBay Commercial, InterBay Asset Finance, and Heritable Development Finance, while retail savings products are offered through Charter Savings Bank and Kent Reliance. OSB India provides offshore operational support. The group focuses on underserved mortgage market segments including Buy to Let, residential, commercial and semi-commercial mortgages, development finance, bridging and asset finance.

Differentiator

Problem solved

Functional benefit

Brands

• Rely Mortgages: A buy to let lending powerhouse focused on property investors and brokers through speed, clarity and insight. Underpinned by a new mortgage technology platform with data-led approach to underwriting enabling greater speed to decisions.
• Precise Mortgages
• Kent Reliance for Intermediaries
• InterBay Commercial
• InterBay Asset Finance
• Heritable Development Finance
• Charter Savings Bank
• Kent Reliance
• OSB India (OSBI)

Products and services

• Rely Mortgages (Buy-to-Let Lending) Buy-to-let mortgage lending product line for property investors and their brokers, covering personal ownership and limited company structures, underpinned by a new mortgage technology platform with data-led underwriting for faster decisions.
• Precise Mortgages Specialist residential and buy-to-let mortgages and bridging finance for customers underserved by mainstream lenders, including the self-employed and those with adverse credit, using straightforward criteria and clear decision making.
• Kent Reliance for Intermediaries Specialist intermediary mortgage lending covering buy-to-let for personal ownership and limited companies, residential mortgages for non-standard income, large loan requirements, and shared ownership.
• InterBay Commercial Bespoke commercial, semi-commercial, buy-to-let, bridging and developer exit finance solutions delivered in partnership with brokers for complex cases that mainstream lenders decline.
• InterBay Asset Finance Hire purchase, leasing and refinancing facilities for UK SMEs and small corporate entities to fund business-critical assets.
• Heritable Development Finance Bespoke development finance for new build houses and flats, conversions and refurbishments (including mixed-use opportunities) for experienced property developers and SME housebuilders with proven track records.
• Charter Savings Bank (Retail Savings) Retail savings bank offering UK customers online and postal savings accounts, Cash ISAs and bonds with competitive interest rates and excellent service, supported by a new digital savings platform.
• Kent Reliance (Branch & Savings) Retail savings franchise with a network of branches in Kent and a wide range of postal and online savings accounts, supported by a dedicated call centre, helping customers save since the 1840s.

Quantifiable outcome

• Problem loans rose to 4.2% by June 2025 from 2.5% at end-2022
• +3 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Depaul UKcoreStrategic or Co-development Partner · 1 January 2025OSB Group's UK charity partner for 2025. Depaul is one of the largest youth homelessness charities in the UK, supporting around 5,000 young people every year experiencing or at risk of homelessness. OSB Group contributed £20,000 of match funding to Depaul's Winter Appeal, which drove a 189% increase in public donations raising a total of £185,634.
• Down Syndrome Swimming Great Britain (DSS-GB)minorStrategic or Co-development PartnerSponsorship of the squad of elite British swimmers with Trisomy 21 or Mosaic Down Syndrome who compete internationally at World and European Down Syndrome Swimming Championships.
• Cyclopark CharityminorStrategic or Co-development PartnerLocated near Gravesend in Kent, Cyclopark is a large, purpose-built, multi-activity venue operated by a charity offering cycling, running, and extreme sports facilities.
• Pen Y Bryn Outdoor LearningminorStrategic or Co-development PartnerA Community Interest Company (CIC) and not-for-profit social enterprise based in Eryri (Snowdonia) National Park, North Wales, dedicated to breaking down financial, physical, and social barriers to outdoor adventure.
• The South Downs National ParkminorStrategic or Co-development PartnerPartnership supporting three key projects: Trees for the Downs (tree planting), Building Pollinator Corridors (Beelines - wildflower corridors), and Outdoor Learning Grant (financial assistance for school pupils).
• Demelza Hospice Care for ChildrencoreStrategic or Co-development PartnerSupported by Kent Reliance through Children's Savings Accounts. Provides clinical care, therapies, specialised activities, and practical support across Kent, South East London, and East Sussex. OSB Group benefits each year through donations linked to children's savings account and employee fundraising.
• Coventry Rugby FoundationminorStrategic or Co-development PartnerIn the West Midlands, supporting Project:500 holiday camps for disadvantaged children (sports, nutrition, food parcels) and lead sponsor of Rugby & Reading programme for primary schools.
• Kent FAminorStrategic or Co-development PartnerAn award-winning monthly YouTube programme serving Kent's grassroots football community, sponsored through OSB Group brands.
• SEFA WomenminorStrategic or Co-development PartnerFemale football academy based in Kent with the mission to develop young female footballers and provide a pathway into the professional game.

Scale indicators9 records

Recent moves7 records

Expansion highlights4 records

Direct peers

• Paragon Banking Group: UK-listed specialist bank focused on buy-to-let, commercial and development finance, with a similar intermediary-led distribution model. Direct competitor to OSB's Rely, Precise, InterBay and Heritable brands across most specialist mortgage segments.
• Shawbrook Group: UK specialist challenger bank focused on commercial, SME and buy-to-let lending via brokers, providing directly overlapping specialist mortgage and asset-finance products to OSB's target customer base.
• Aldermore Group: UK specialist challenger bank with parallel buy-to-let, bridging, development finance and SME asset finance offerings, distributed through intermediary networks in close competition with OSB.
• Close Brothers Group: UK specialist banking and asset finance group with significant property, commercial and SME lending, overlapping with OSB's specialist mortgage and InterBay asset finance franchises.
• Secure Trust Bank: UK specialist challenger bank providing specialist mortgages, bridging finance and retail deposits — a smaller but structurally similar specialist lender and savings franchise competing with OSB.

Broad incumbents

• Coventry Building Society: Large UK mutual building society with diversified mortgage, savings and specialist lending franchises, competing with OSB for retail savings and in adjacent specialist segments.
• Skipton Building Society: UK's fourth-largest building society, offering a comparable mix of savings, residential, buy-to-let and specialist lending through a broad distribution model that overlaps with OSB.
• Virgin Money UK: Large UK challenger bank with mortgage, savings and business lending franchises; competes with OSB in specialist residential mortgages and retail savings deposits.
• Metro Bank: UK challenger bank offering retail savings, residential mortgages and commercial lending, providing a broader comparison point for OSB's deposit-funded, multi-channel UK banking model.

Emerging players

• Atom Bank: UK digital challenger bank offering specialist and mainstream mortgages plus savings, representing an emerging digital-first competitor to OSB's specialist lending and savings franchises.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/onesavings-bank-plc

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OneSavings Bank