Why high-growth UK firms face a bank-lending mismatch

A Bank of England Insight published on 1 October 2026 finds that UK sectors with a higher concentration of fast-growing small businesses receive a smaller share of bank credit than other sectors, and that SMEs in those sectors tend to receive finance in smaller amounts, over shorter periods, than SMEs elsewhere. The analysis, by Bank staff Tommaso Bighelli, Sudipto Karmakar, Javier Miranda and Sophie Piton, does not show that banks are turning away good businesses. It helps explain why conventional bank debt can be a poor fit for asset-light, fast-growing firms with volatile or uncertain near-term cash flow — not a verdict on high-growth firms as a class, and not evidence of a financing failure.

This matters for anyone running, investing in, lending to or setting policy for UK scale-ups, because the government wants more of these firms to scale and remain in the UK. The British Business Bank's current five-year mandate, which took effect on 1 April 2026, explicitly includes helping promising firms in Industrial Strategy sectors scale and stay in the UK. If conventional bank lending and the UK's growth-firm population are pulling in different directions, that mandate gets harder to deliver.

What the Bank measured

The Bank defines a "high-growth SME" precisely: annual turnover below £30m, with average annualised employment growth above 20% a year over a three-year period. That is narrower than the everyday term "scale-up," and the distinction matters when reading the figures below.

The researchers combined monthly financial-account information on UK SMEs, supplied to the Bank by Experian under the Commercial Credit Data Sharing framework, with sector-level high-growth-firm indicators from the Office for National Statistics' Business Structure Database and private equity and venture capital data from PitchBook.

Two limitations matter. The Bank describes its findings as descriptive, sector-level associations, not evidence of causation, and says the analysis does not establish whether banks are misallocating credit or that every high-growth SME faces a financing constraint. And the credit sample excludes some smaller and challenger banks, so it does not cover the whole high-growth SME lending market — an omission whose size and direction the Bank cannot itself quantify from the published work.

Why fast growth is hard to underwrite

Bank lending rests on two questions: can this business service the debt, and if not, what can the lender recover? Both are harder to answer for a firm growing by more than a fifth a year.

Repayment capacity depends on predictable cash flow. Many high-growth firms reinvest everything they earn into expansion and can show volatile or negative near-term earnings even while the underlying business is succeeding. Recoverability depends on collateral. Nearly half of the high-growth SMEs in the Bank's data sit in information and communications technology, professional and scientific activities, and administrative and support services — sectors built on software, data, intellectual property and people rather than property, plant or stock. A related Bank of England working paper, published 27 June 2025, found that tangible capital is associated with lower borrowing costs and intangible capital with higher borrowing costs, within its structural model and controls, because intangible assets are generally harder to value and sell after a default than a building or a machine.

Those same three sectors accounted for less than 30% of SME lending in 2024, against their near-50% share of high-growth firms.

What the numbers show

Among SMEs that did secure bank finance, the Bank found clear differences by sector type.

These differences were statistically significant across the credit types examined, except unsecured loans. The Bank also found a negative sector-level association between high-growth-firm concentration and bank-credit share, and a positive association between lower bank-credit shares and private equity investment.

Two cautions apply. The figures describe SMEs grouped by sector, not individual high-growth firms compared directly with other borrowers, so they should not be read as a firm-level statistic. And this sits alongside the Bank's broader assessment — in a separate Insight, "Who finances UK business?", published 24 September 2026 — that aggregate SME credit availability has returned to something like normal since the post-crisis period. The two can be true together: overall supply being adequate does not mean it suits every type of business.

Bank loan, venture capital or private equity

British Business Bank guidance sets out the basic distinction. Debt must be repaid, normally with interest; failing to do so can damage a business's credit standing or put pledged assets at risk, but it does not dilute ownership. Equity raises capital by selling a stake in the business and creates an ongoing relationship with the investor; it removes the scheduled repayment obligation but not risk — founders can be diluted, investors may influence decisions, and returns depend on the company's eventual value and exit.

This is a typical pattern, not an absolute rule. Growth-equity and minority private-equity deals can overlap with late-stage venture capital, and specific instruments often carry covenants, preference terms or conversion rights that blur the clean split.

Why equity is not a complete substitute

The Bank's finding that sectors with less bank credit tend to attract more private equity could look like evidence that equity simply fills the gap debt leaves behind. The Bank does not draw that conclusion, and the wider data suggest caution is warranted.

The British Business Bank's 2026 equity tracker, covering 2025, recorded £12.3bn in UK smaller-business equity investment — down 4% on the previous year. That capital is concentrated: AI businesses took 44% of the money (on 26% of deals), and the ten largest fundraisings alone accounted for 23% of the total. A market this concentrated by sector and deal size cannot be assumed to reach every high-growth firm outside AI or outside the largest funding rounds. UK venture capital investment during 2023–2025 also ran around 32% below US investment after adjusting for the size of each economy, though the British Business Bank notes a small number of exceptionally large US deals inflate that comparison.

These equity and debt figures also come from different sources covering different periods — the Bank's Insight draws on 2026 first-half PitchBook estimates, while the British Business Bank tracker reports calendar-year 2025 figures on its own methodology — so the two should be read as separate pictures of the market, not compared directly.

Other routes between pure debt and pure equity

Banks remain the dominant source of UK SME debt: the Bank of England estimates they account for at least 65% of outstanding SME debt as of 2026 Q1, even as SME debt overall has fallen from around 12% of GDP in 2011 to below 10% by the same date. Several instruments sit between a conventional term loan and an equity sale: venture debt, asset finance, invoice finance and government-backed guarantees, each suited to firms with different mixes of assets, revenue and stage.

One policy step speaks directly to this mismatch. From 12 July 2026, the British Business Bank made up to £500m of existing ENABLE Guarantee capacity available for an initial 12 months to support lending to intellectual-property-rich smaller businesses — guarantee capacity rather than a grant or a direct loan fund in itself. How far this changes lenders' treatment of IP, or what they could recover after a default, is not yet established. HM Treasury confirmed the allocation as part of a wider small-business finance package on 13 July 2026.

What this means for UK scale-up policy

The British Business Bank's current mandate, running from April 2026, commits it to helping Industrial Strategy-sector firms scale and stay in the UK, improving finance markets and mobilising institutional capital. The Bank of England's new evidence gives that mandate a sharper problem to aim at: not "banks should lend more" in general, but a documented mismatch between how fast-growing, asset-light firms generate value and how conventional secured lending is underwritten.

What the evidence does not yet show is whether this mismatch actually holds back viable UK businesses, or whether it reflects efficient risk pricing by lenders correctly declining long-dated, large secured loans to firms whose main assets cannot reliably be recovered in a default. Answering that would need firm-level data on loan applications, approvals and refusals, controlling for risk and demand — which the published Insight does not provide.

What to watch next

Three things would sharpen this picture. The first is whether the £500m ENABLE Guarantee allocation for IP-rich businesses translates, over its initial 12-month window from July 2026, into more signed lending facilities or better pricing — evaluation data is not yet available. The second is whether valuation standards and secondary markets for intellectual property develop enough to change what lenders can realistically recover after a default. The third is whether a future, more granular Bank of England or British Business Bank study can separate genuine credit constraints from businesses that are simply better suited to equity at their current stage. Readers weighing a bank loan against equity finance for their own business should treat this article as background, not as guidance, and consult the British Business Bank's official guidance before making a financing decision.