Due Diligence vs Credit Check: What's the Difference?

Q: Is a credit check the same as a CCJ search?

No. A credit score includes CCJ data as one input, but the bureau's score is a model output, not a raw record. A CCJ search at Registry Trust gives you the actual judgments — date, amount, satisfied or not. Pulling both is sensible for any contract above nuisance value.

Why a generic credit score isn't supplier due diligence, and what contextual due diligence adds.

A credit check and supplier due diligence sound interchangeable, and a lot of UK procurement teams treat them that way. They aren't. A credit check is a single bureau score predicting whether a company will pay its bills; supplier due diligence is the broader question of whether you should sign a contract with them at all.

TL;DR

A credit check is a bureau-derived score predicting payment default, built from filed accounts and inter-company payment behaviour.
Supplier due diligence is the wider commercial assessment: financial, legal, governance, reputational and operational, scaled to contract value.
A credit score answers "will they pay us late?". Due diligence answers "should we be doing business with them at all?".
The two are complementary, not substitutes. A clean credit score on a phoenixed company is still a phoenixed company.
For sub-£5k one-off spend the credit check usually suffices. For anything material, it doesn't.
Bureau data is backward-looking and the score is generic. Due diligence adds context: sector, contract value, director history, governance.
Treating a green credit score as a sign-off is one of the most common ways UK procurement teams get caught out.

What is a credit check, exactly?

A credit check is a scored opinion from a credit bureau on the probability a company will default on its obligations to other businesses. The big UK names are Experian, Creditsafe, Dun & Bradstreet, Graydon and Red Flag Alert. They each ingest the same public spine (Companies House filings, the Gazette, Registry Trust CCJs, the Insolvency Service) and layer on private data, most importantly trade-payment behaviour pooled from their own subscriber base.

The output is usually a numeric score, a recommended credit limit in pounds, and a traffic-light rating. The score is built for a specific question: how likely is this company to fail to pay an unsecured trade creditor in the next 12 months, relative to other UK companies. That is a useful number. It is also a narrow one.

A few things worth being clear-eyed about. Bureau models differ, so the same company can score amber at one bureau and green at another. The trade-payment data is only as good as the bureau's subscriber coverage in your supplier's sector. And the score is a probability, not a verdict — a small percentage of green-rated companies fail every year, and plenty of red-rated ones trade on for years.

What does "supplier due diligence" cover that a credit check doesn't?

Due diligence is the structured commercial check a buyer runs before awarding a contract. It overlaps with the credit check on financials but goes wider, into governance, legal status, sector context and operational capability. The full picture is in the supplier due diligence pillar guide, but the short version is five buckets:

Financial health. Reading the accounts in context, not just the score. A bureau score won't tell you the balance sheet is propped up by intercompany debt, that net assets have halved over three years, or that a recent charge suggests cashflow has been refinanced. Those patterns are in the filings if you read them; the red flags in supplier financials guide catalogues the ones that matter.

Legal and entity verification. Confirming the legal entity matches the trading name on the proposal, the registered office is real, no strike-off proposal is live in the Gazette, and the company isn't in any insolvency procedure. A credit bureau will flag a live insolvency, but the entity-mismatch problem (signing with the wrong company in a group) it won't catch for you.

Governance. The officers and persons with significant control. A bureau score reflects the company's filings, not the director's history of running failed companies. Phoenixing — the same people, the same trade, a new company every few years after the last one folded owing money — is invisible in a company-level credit score. It is visible in five minutes of director-history work.

Reputational and sector signals. Press, reviews, sector-register status (SIA, CHAS, ICO, FCA, CQC, depending on what they do). A clean credit file does not mean the supplier is the right counterparty for a regulated contract.

Operational fit. Insurance, accreditations, references that you actually phone. None of this is in the bureau report.

When is a credit check enough on its own?

Often, honestly. The credit check is the right tool when the contract is small, the engagement is short, and the failure mode you're worried about is the supplier going under before they deliver or invoice you cleanly. For a one-off £2,000 order from an established UK Ltd with five years of clean filings, a green credit score and the public Companies House record is plenty. Spending an analyst day on that supplier is a waste.

The credit check is also the right tool when you need a defensible number — a credit limit to set in your AP system, or a payment-terms decision. Bureau scores are designed for that purpose and read consistently across teams.

A rough rule we'd offer: if the contract value, over its full life, is under your monthly bad-debt tolerance, a credit check on its own is usually proportionate. Above that, it isn't.

When does a credit check stop being enough?

It stops being enough whenever the question shifts from "will they pay us" to "should we be tied to them". Concretely:

High-value or multi-year contracts. A three-year FM contract or a £400k construction sub-contract carries failure modes the credit score doesn't price — TUPE exposure, retention risk, reputational drag if the supplier collapses mid-delivery.
Regulated sectors. The credit score doesn't tell you whether your security services supplier holds a current SIA approved-contractor licence. It also doesn't tell you whether your data processor is on the ICO register.
New or thinly-filed companies. A young company with one set of micro-entity accounts has almost no data for the bureau model to score. The traffic light will hedge, and the procurement decision still needs to be made.
Suppliers run by directors with history. A new company can have a perfectly clean credit file and a director who has wound up three previous companies in the same trade owing money. The score won't see that. The director history check will.
Anything that has triggered a behavioural flag. Slow responsiveness during the buying process, sudden ownership change in the pitch, an aggressive payment-terms ask, a name that almost-but-doesn't-quite match what's on Companies House. None of these affect the credit score.

How do the two fit together in practice?

Treat the credit check as one input among several, weighted by what's on the line. The methodology Vendrpulse uses on every report reads the credit signals in the same pass as the governance, sector and director history work, then writes a single risk note scaled to the contract value the buyer puts in front of us.

A practical sequence for a mid-sized UK procurement team:

Identity check first. Get the company number from the supplier's invoice template or proposal footer and verify against Companies House. Half of all due diligence mistakes happen before the diligence starts, because someone checked a similar-but-different entity.
Public-record pass. Filing currency, accounts trend over three years, officers, PSC, charges, live insolvency or strike-off, sector register if relevant. The Companies House checks explained guide walks through what each filing actually contains.
Credit check. Pull a bureau score for the credit-limit and payment-terms decision. Use it as a number, not as the answer.
Director history. Especially on younger or thinly-filed companies.
Operational verification. Insurance, accreditations, references.
Written judgement. A dated note saying what was found and what the decision was, filed somewhere finance and legal can find later.

The two checks answer different questions. Run both, weigh both, and don't let a green bureau score talk you out of asking the questions the score wasn't designed to answer.

FAQ

Is a credit check the same as a CCJ search?

No. A credit score includes CCJ data as one input, but the bureau's score is a model output, not a raw record. A CCJ search at Registry Trust gives you the actual judgments — date, amount, satisfied or not — which you can read directly. Pulling both is sensible for any contract above nuisance value.

Can I rely on a green credit score for a high-value contract?

Not on its own. A green score tells you the bureau model thinks default risk is low based on filed data and trade-payment patterns. It tells you nothing about director history, governance, sector compliance, or whether the company is the right counterparty for a multi-year commitment. Pair the score with the wider checks before signing anything material.

What does a credit check cost compared to a full due diligence report?

A one-off bureau report typically costs £10-£40 depending on provider and depth, with subscription pricing for higher volumes. An analyst-reviewed due diligence report sits higher — Vendrpulse Pulse reports start at £25 and Pulse Premium at £500 — because the cost is human reading time, not data access. The right spend depends on contract value, not on what's cheapest.

Do credit bureaux check directors as well as companies?

They hold director records and most reports surface obvious flags like disqualifications. They do not usually do the joined-up reading — tracking the same individual across multiple liquidated companies in the same trade, which is the pattern that matters for phoenixing. That joining-up is a manual job.

Why do two bureaux give different scores for the same company?

Different models, different data weights, different trade-payment coverage by sector. None of them are wrong; they're answering slightly different versions of the same question. If two bureaux disagree materially on a supplier you care about, that disagreement is itself a signal worth investigating.