Red Flags in Supplier Financials

Q: How recent do filed accounts need to be to be useful?

UK private companies have nine months after year-end to file, so accounts can be up to 21 months old. They are still useful — patterns across three filings matter more than the freshness of the latest one — but for high-value contracts ask the supplier for management accounts.

Q: Are credit scores enough for supplier due diligence?

No. A credit score is a single number optimised for predicting payment default to other bureau subscribers. It does not tell you about director history, governance, sector context, or how the financials compare to the size of the contract you are signing.

The financial warning signs in UK company filings that should give procurement teams pause.

When you read a UK supplier's filed accounts before signing a contract, you are looking for questions to ask, not verdicts to issue. A single warning sign rarely means a supplier is unsafe to use. A cluster of them, weighed against the size of the contract you are about to sign, is what matters. This guide walks through the financial red flags that should slow a procurement reviewer down, where to find each one in public sources, and how to read them in context.

TL;DR

Late filings are the cheapest signal to check and one of the most predictive — overdue accounts or confirmation statements often precede insolvency by months.
Negative or rapidly eroding net assets in micro-entity accounts mean the company is being kept alive by directors' loans or shareholder funds; ask who is propping it up and why.
Director churn, especially of the finance director or company secretary, and frequent registered-office changes are governance flags that rarely show up in a credit score.
New fixed and floating charges in the last 12 months suggest the company has had to raise secured debt; check who the lender is and what was pledged.
Working capital squeeze — current liabilities growing faster than current assets — is the most common reason small UK suppliers fail to deliver mid-contract.
CCJs, gazette notices and strike-off action are the loudest signals; none of them appear by accident.
Read every flag against the size of the contract and the switching cost if the supplier fails. A £2,000 one-off is not a £200,000 multi-year commitment.

What counts as a red flag in supplier financials?

A red flag is any signal from a supplier's public record that materially raises the chance they cannot deliver, or that delivery will be disrupted by their own financial position. The signals fall into seven areas: profitability, liquidity, leverage, working capital, governance, legal and regulatory, and behavioural. Most of them sit in plain sight on Companies House, the Gazette, the Registry Trust and HMRC's public registers. The skill is not finding them — it is reading them together and weighing them against the deal in front of you.

Profitability: are they actually making money?

The fast answer: if a supplier files full or small-company accounts, look at retained earnings over three years; if they file micro-entity accounts, you cannot see profit at all, and that itself is information.

Most UK SMEs file under the micro-entity regime (FRS 105) or as a small company (FRS 102 Section 1A). Micro accounts are a balance sheet and a few notes — no profit and loss statement is filed publicly. So for a large share of UK suppliers, you will never see revenue or profit directly. What you can see is the change in retained earnings year on year on the balance sheet. If retained earnings are falling, the company made a loss that year. If they are falling consistently across three filings, the company is losing money structurally, not just having one bad year.

Two things to be careful of. First, owner-managed companies often pay profits out as dividends, so flat retained earnings are not necessarily a sign of zero profit. Second, a single loss-making year is normal for an investing business — a fit-out contractor that took on a new yard, or an MSP that hired ahead of revenue. Ask the supplier directly what changed. The red flag is the pattern, not the single number.

Liquidity: can they pay their bills this quarter?

The fast answer: compare current assets to current liabilities. If current liabilities are larger, ask how they fund the gap.

The classic current ratio — current assets divided by current liabilities — is a blunt instrument but a useful first read. A ratio comfortably above 1 means the company can in principle cover its short-term obligations from short-term assets. A ratio below 1 is not automatically fatal (many businesses run on supplier credit and customer prepayments), but it should prompt questions.

Look harder at what makes up current assets. Trade debtors that are large relative to revenue suggest the supplier is funding its customers — they are slow payers, or worse, they are not paying at all and the debt is stale. Cash at bank trending towards zero across three years while debtors grow is a textbook squeeze. If the supplier discloses a director's loan on the liability side that has grown each year, the business is being kept liquid by the owner's personal money, which is a flag worth understanding before you become another creditor.

Leverage: how much debt is sitting on the balance sheet?

The fast answer: read the charges register on the Companies House page, then read the long-term creditors note in the accounts.

Every secured debt — bank loans, invoice finance, asset finance — should appear as a registered charge against the company. Open the Charges tab on Companies House. A small business with three or four charges from different lenders, all recent, has been raising money in pieces, which usually means each lender has been cautious. Charges from invoice finance providers in particular tell you the company is selling its receivables for early cash, which is normal in some sectors (recruitment, logistics) and a warning in others (SaaS, professional services).

In the accounts, the long-term creditors note breaks out debt due after more than one year. Compare it to net assets. A small company with £400k of long-term debt and £40k of net assets is highly geared and has very little equity cushion if trading dips. That does not make them a bad supplier, but it does mean a contract loss could push them into trouble.

Working capital: the most common reason small suppliers fail you

The fast answer: look at the trend in net current assets across three years. If it has gone from positive to negative, the company is running out of operating headroom.

Working capital problems are the single most common reason a small UK supplier misses delivery, refuses to commit to a contract milestone, or quietly tries to renegotiate payment terms after the order is placed. The accounts will tell you about it before the supplier does. Net current assets is current assets minus current liabilities; tracking that single line across three years gives you the trajectory.

Sector matters here. A construction firm with negative working capital and large trade creditors may simply be running customer deposits and subcontractor credit in the normal way. The same number in a SaaS reseller is alarming. Vendrpulse's analyst review weighs this against sector benchmarks, but if you are doing the read yourself, look at peers in the same SIC code on Companies House and ask whether this supplier's balance sheet looks unusual for the work they do.

Governance: what the people and the paperwork tell you

The fast answer: read the filing history end-to-end and the officer list, then check for resignations, address changes and gaps.

Governance flags often appear before financial ones. The filing history tab on Companies House shows every document the company has submitted in date order. Look for:

Confirmation statement overdue — the company has not confirmed who owns it in the last 14 months. This is a £13 filing. Missing it suggests the office is not being run.
Recent change of registered office, especially to a residential address or a formation agent. Combined with a director resignation, this is the classic pre-strike-off pattern.
Recently appointed director with no prior UK company history, especially as sole director. Cross-check the named director against the director appointments search on Companies House for prior failures — the director history checks guide covers what to look for there.
Auditor resignation in companies large enough to require one. The resignation letter is filed publicly and sometimes states a reason.

For larger contracts, request the supplier's group structure if it is not obvious from the PSC filings. Companies that sit inside a group can be supported by their parent — or can be the entity the group sheds when things go wrong.

Legal and regulatory: CCJs, gazette notices and strike-off

The fast answer: search the Registry Trust for CCJs, the London Gazette for insolvency notices, and the Companies House filing history for any "First Gazette notice for compulsory strike-off" entry.

A County Court Judgment means a creditor sued the company for an unpaid debt and won. CCJs do not always mean financial distress — some companies dispute invoices on principle and lose — but they almost always mean a creditor relationship broke down badly enough to go to court. One CCJ for £400 is a question; three CCJs totalling £15,000 across two years is a pattern. The CCJ guide explains how to search the Registry Trust and what context to ask for.

The London Gazette carries statutory notices: appointment of administrators, creditors' voluntary liquidations, members' voluntary liquidations, and the strike-off notices that precede a company being dissolved. Any of these on the supplier you are about to sign should stop the process while you ask what happened. Note that strike-off action can also be initiated by Companies House for filing failures, not just by the directors — in either case, it is not noise.

Sector-specific registers add another layer. Construction principals should check the CIS register and any relevant trade body memberships; security firms should hold an SIA approved-contractor status; food businesses should have current FSA ratings. The Companies House checks guide walks through which of these matter for which contract type, and our methodology page sets out what Vendrpulse pulls from each source.

Behavioural signals: how they show up in the buying process

The fast answer: red flags also appear in how the supplier behaves before contract — not just in the filings.

This category is softer but worth taking seriously. Reluctance to provide bank details for direct debit setup, requests for unusually large upfront deposits, VAT numbers that fail validation on the HMRC checker, and invoice addresses that differ from the registered office without explanation all belong here. So does a supplier that goes quiet for three weeks during diligence and then sends a senior partner to push the contract through. None of these are damning on their own; together, they suggest something is being managed.

The most useful behavioural test is also the simplest: ask the supplier to walk you through their last filed accounts. A finance-literate owner-manager can do this in 10 minutes and will welcome the question. An evasive answer is information.

How to weigh red flags against the contract

The fast answer: the same flag is a deal-breaker on a £500k three-year contract and an acceptable risk on a £3k one-off — set your threshold before you read the file, not after.

Before you open Companies House, write down two things: the financial size of the contract over its full term, and the switching cost if the supplier fails halfway. A small one-off purchase from a financially shaky supplier may be fine — you can buy elsewhere if they fold. A multi-year managed service contract with embedded systems integration is different; the cost of replacement, not just the contract value, is what is at risk.

A simple rule that works for most mid-market procurement: if the cost of supplier failure exceeds 5% of your annual department spend, treat any cluster of two or more red flags as a stop-and-discuss point with finance. The supplier due diligence guide sets out a fuller proportionality framework, and the onboarding checklist covers what to put in the contract once you decide to proceed.

FAQ

Is one CCJ enough to reject a supplier?

Usually no. A single CCJ, especially one that has been satisfied, often reflects a single billing dispute rather than financial distress. Ask the supplier to explain it. The pattern that matters is multiple unsatisfied CCJs across two or more years, or a CCJ alongside late filings and a working capital squeeze.

How recent do filed accounts need to be to be useful?

UK private companies have nine months after their year-end to file. So at any given point you may be looking at accounts that are up to 21 months old. They are still useful — patterns across three filings matter more than the freshness of the latest one — but for high-value contracts ask the supplier for management accounts to bridge the gap.

What if the supplier files micro-entity accounts and I can barely see anything?

Most UK SMEs do. You can still read net assets, net current assets, total creditors, debtors, cash, and the trend in retained earnings across years. You can also read the full filing history, charges, officer record and PSC information. For larger contracts, ask the supplier directly for a profit and loss summary and management accounts — a serious supplier will provide them under NDA.

Are credit scores enough for supplier due diligence?

No. A credit score is a single number distilled from some of the same data, optimised for predicting payment default to the credit bureau's other subscribers. It does not tell you about director history, governance, sector context, or how the financials compare to the size of the contract you are signing. The due diligence vs credit check guide breaks down the difference.

How quickly can financial problems escalate?

Faster than the filing cycle reveals. A company can go from "last accounts looked fine" to administration in a few months — accounts only tell you what was true at the last year-end. That is why behavioural signals during the buying process, and live checks like the Gazette and Registry Trust at the point of contract, matter alongside the filed numbers.

Does Vendrpulse monitor suppliers continuously?

No. A Vendrpulse report is a point-in-time analyst review at the moment you commission it. For high-value contracts, run a fresh check before each renewal or major change of scope, rather than relying on a report from six months ago.