Top 10 Unsecured Business Loan Providers in the UK

An unsecured business loan requires no asset as collateral – approval rests on your business’s financial health, credit history and trading record. Across the ten UK providers we verified for 2026, amounts run £1,000 to £3 million, big-bank representative APRs sit between 9.94% and 15.73%, and the fastest lenders fund within hours. Here is the full comparison.

What Is an Unsecured Business Loan?

An unsecured business loan is a fixed-term loan where no asset is pledged as collateral. The lender assesses risk based on business financials, credit history, and trading record rather than security. Most unsecured lenders require a personal guarantee from company directors – meaning if the business defaults, the director is personally liable – but the business’s physical assets are not at direct risk from a charge or seizure.

The key distinction between “unsecured” and “no personal guarantee” is important: most UK unsecured business loans still require a personal guarantee from directors. The lender cannot seize your business assets, but they can pursue you personally for the outstanding balance. A small number of online lenders offer genuinely guarantee-free loans for small amounts, but these are the exception rather than the rule.

The Top 10 Unsecured Business Loan Providers Compared

All ten providers below were verified against their own published terms in 2026. Watch the pricing basis: banks publish representative APRs, Funding Circle an annual interest rate, iwoca a per-30-day rate, Fleximize a monthly rate, and Capify and Nucleus disclose no rate at all – so compare the total amount repayable.

Funding Circle’s unsecured loans run £10,000 to £750,000 over 6 months to 6 years, from 6.9% per year – an interest rate, with a completion fee added on standard loans. Decisions take as little as an hour, funds arrive within about 48 hours, and early repayment is free. A personal guarantee is required.

TSB’s fixed-rate loan spans £1,000 to £1 million over 1–10 years at a 9.94% representative APR – the lowest big-bank headline we verified, though a £250 arrangement fee chips at the advantage on small loans. Full detail in our TSB review.

HSBC lends £1,000 to £25,000 unsecured over 1–10 years: 11.3% representative APR under £10,000, dropping to 8.6% on £10,000–£25,000 – the cheapest verified bank pricing at that size. No arrangement fee, no HSBC account required, and its Kinetic loan gives sole traders a dedicated £1,000–£10,000 route. See our HSBC review.

Barclays offers unsecured lending to £100,000 over 1–10 years, priced by band: 11.2% representative overall, from 8.5% on £15,000–£25,000 up to 14.9% on the smallest loans. Early repayment is free and some borrowers can start with up to 6 months’ repayment holiday. See our Barclays review.

Santander’s Business Loan runs £1,000 to £50,000 over 1–7 years at 11.2% representative APR with zero arrangement or setup fees and free overpayments. You must hold a Santander business current account, and weaker profiles can be quoted up to 29.9%. Full detail in our Santander review.

NatWest’s small business loan covers £1,000 to £100,000 unsecured over 1–7 years at a 15.73% representative APR – the highest bank headline we verified – with no arrangement fee and no early repayment fee. See our NatWest review.

iwoca’s Flexi-Loan pre-approves £1,000 to £1 million: draw what you need, pay from 1.5% per 30 days on the drawn balance only, repay any time free. Approval within 24 hours; funds typically in hours. Limited companies and LLPs only – sole traders are excluded, and its representative example equates to 49% APR, so use it briefly.

Fleximize publishes exactly what it charges: 0.9%–2.9% per month on its 12–60 month Flexiloan (12+ months trading) and 1.9%–3.9% per month on the 3–12 month Flexiloan Lite (6+ months trading), both £10,000 to £1 million. No arrangement fees applying directly, no early repayment penalties, and top-ups unlock after three repayments. A personal guarantee is required on every product.

Capify’s unsecured Small Business Loan runs £10,000 to £3 million over 3–12 months, repaid in small regular instalments, and uniquely here accepts sole traders, partnerships and franchises alongside limited companies. Pricing is a risk-based factor rate with nothing published – disclosed worked examples equate to 47.9–67.89% APR. Eligibility: 12 months trading, £10,000 monthly turnover. See our Capify review.

Nucleus’s revenue-based loan lends £3,000 to £300,000 (up to 200% of monthly revenue) over 3–12 months, repaid by fixed weekly direct debit rather than a slice of card takings. Open Banking underwriting gives decisions in minutes and same-day payouts, from just 4 months trading. No rate is published anywhere, and loans above £75,000 need a homeowner personal guarantee.

Unsecured Business Loan Rates UK 2026

Verified 2026 pricing: big-bank representative APRs run 9.94% (TSB) to 15.73% (NatWest), with HSBC’s 8.6% band on £10,000-£25,000 the cheapest bank rate. Funding Circle quotes from 6.9% per year interest. Fast lenders cost more – Fleximize’s monthly bands annualise to roughly 11-47%, and Capify’s disclosed examples equate to 47.9-67.89% APR.

The rate you receive depends on your credit score, turnover, trading history, loan size, and repayment term. Always compare total cost of borrowing – not just headline APR – as arrangement and completion fees add significantly to the real cost, and several lenders here price per month or per 30 days rather than annually.

Unsecured Business Loan Eligibility

Most UK unsecured business loan providers require: minimum 6 months trading (12 months for better rates), £50K+ annual turnover, a UK-registered business (limited company, LLP, or sole trader), and a personal guarantee from directors. High-street banks require 2+ years of filed accounts and a clean personal credit history. Online lenders (Funding Circle, iwoca, Capify) have more flexible criteria and accept newer businesses with lower turnover.

A personal guarantee is standard on most UK unsecured business loans above £25K. This means a company director personally guarantees the loan – if the company cannot repay, the lender can pursue the director’s personal assets. Some lenders cap guarantee liability at a percentage of the loan amount; others require a full personal guarantee backed by a director’s personal assets including residential property.

Your personal credit score matters as much as your business credit profile for unsecured lending. A CCJ, IVA, or multiple missed payments in the last 12 months will restrict you to specialist bad-credit lenders at significantly higher rates. If this applies, see our bad credit business loans guide for lenders that specifically accommodate impaired credit history.

How to Apply for an Unsecured Business Loan

Applying for an unsecured business loan typically takes 20–60 minutes online. You’ll need: 3–6 months of bank statements (most lenders accept Open Banking access), Companies House number (if limited company), most recent filed accounts or management accounts, and a summary of what the loan is for. Online lenders typically give a decision within 24–72 hours. Using a broker (Think Business Loans, Swoop) gives access to multiple lenders with a single application and no additional hard credit search.

1. Check your credit profiles – personal (Experian, Equifax, TransUnion) and business (Creditsafe, Experian Business) before applying. Errors cost you approvals and rate points.
2. Determine your borrowing needs – loan amount, term, and monthly repayment capacity. Lenders use an affordability assessment; if your business has inconsistent cash flow, have an explanation ready.
3. Compare lenders directly or use a broker – direct comparison gives you full control; brokers reduce the number of credit searches and often have pre-agreed rates with lenders that aren’t publicly advertised.
4. Review the offer in full – APR, total amount repayable, arrangement fee, early repayment penalty, and personal guarantee terms. The cheapest headline rate is not always the cheapest total cost.
5. Sign and receive funds – most online lenders transfer funds within 24–48 hours of signing the facility agreement.

Unsecured vs Secured Business Loans

Unsecured loans are faster, simpler, and don’t put specific assets at direct risk – but they cost significantly more. Secured loans offer lower rates and larger amounts but take longer and require a formal asset charge. For amounts under £100K with a 1–5 year term, unsecured is usually the right starting point. For amounts over £250K or terms over 5 years, secured lending is almost always cheaper and should be explored first if you have eligible assets.

• Secured Business Loans UK – lower rates, larger amounts, assets required
• Business Loans for Bad Credit – options when your credit history is impaired
• Short-Term Business Loans – 3–18 month unsecured working capital
• Business Loan Costs & Rates UK 2026 – full cost breakdown by loan type
• Best Business Loans UK 2026 – top-rated providers compared
• Self-Employed Business Loans UK – unsecured options for sole traders and freelancers
• Liberis Review UK – no-security revenue-based financing for card businesses

Clara Wenslow

Finance & Business Services Editor

Clara analyses SME finance and procurement markets, covering business loans, invoice finance, payroll, and related B2B services. She ensures each comparison and guide is transparent and data-driven.

Reviewed by

Sarah Mitchell

B2B Commerce & Finance Reviewer