How Credit Scores Work in the UK

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Key takeaways

There is no single UK credit score: Experian, Equifax and TransUnion each have their own
Lenders use your credit report plus their own rules, not the score you see
Paying on time and keeping balances low matter most
Checking your own report does not affect your score
Most negative information stays on file for six years

A credit score is a number that summarises how risky you look as a borrower. Lenders use credit information when deciding whether to offer you a credit card, loan, mortgage, mobile contract or even some insurance and utility accounts. Many people are confused about how scores work, because there is no single UK credit score. This guide explains what is recorded about you, what affects your score and what it means in practice.

There is no single credit score

In the UK there are three main credit reference agencies: Experian, Equifax and TransUnion. Each holds a credit file about you based on information supplied by lenders and public records. Each agency has its own scoring system with different scales and categories, for example "poor", "fair" or "good". A score of 700 at one agency is not directly comparable with a score of 700 at another.

Crucially, lenders do not use the scores shown to you. They use the information in your credit report, and then apply their own rules and scoring models to decide whether to lend. Two lenders can look at the same report and reach different decisions. The score you see is a guide to how your file looks, not a promise of acceptance or rejection.

What is in your credit report

Your credit report is a record of your financial history. It typically includes:

Personal details: your name, date of birth and current and previous addresses
Credit accounts: credit cards, loans, mortgages, overdrafts, mobile phone contracts, buy now pay later accounts and some utilities, with their limits, balances and payment histories
Payment history: whether you paid on time, were late or missed payments, and how late
Public records: county court judgments (CCJs) in England and Wales, decrees in Scotland, bankruptcy and individual voluntary arrangements (IVAs)
Searches: records of the applications you have made and the credit checks lenders have carried out
Financial associations: links to people you share a joint account or financial product with
Electoral register entry: whether you are registered to vote at your address

It does not include your salary, savings balances, race, religion, medical history or criminal record, and it does not hold a "blacklist". Lenders make their own decisions.

What affects your score

Although each agency uses its own formula, the same factors matter in general.

Payment history

Paying on time is the most important factor. Late and missed payments, defaults and CCJs can all lower your score, and they stay on your file for years. A default is typically recorded when an account has been in arrears for a number of months and the lender has terminated it. Most negative information stays on your file for six years from the date it was recorded.

How much credit you use

Using a high proportion of your available credit can suggest financial strain. If you have a £5,000 limit and a £4,500 balance, you look riskier than someone using £500. Keeping balances well below limits is generally better.

Length and mix of credit history

A longer history of well-managed accounts can help. Having no credit history at all can also make it difficult to get approved, because lenders have nothing to judge.

Applications and searches

When you apply for credit, the lender runs a hard search, which is visible to other lenders. Several applications in a short time can look like you are desperate for credit. Checking your own report is a soft search and is not visible to lenders, so it does not affect your score.

Your address and electoral roll

Being on the electoral register at your current address helps lenders confirm your identity. Frequent moves can make it harder to show stability.

Financial links

If you have a joint account or loan with someone, you are financially linked, and lenders may look at their credit history too. If a former partner's problems are affecting you, you can ask the agencies to remove the link once you no longer share an account, as explained in our guide to correcting errors on your credit report.

Myths about credit scores

"Checking my score lowers it." Checking your own report is a soft search and does not harm your score.
"I need to carry a balance to build credit." You do not. Paying your balance in full each month builds a positive record without paying interest.
"Closing old accounts always helps." Closing an account can reduce your available credit and shorten your history. Think before closing, especially if it is old and in good standing.
"Income affects my score." Income is not recorded on your report, although lenders will ask for it in an application.
"A bad score lasts forever." Most negative information drops off after six years, and the effect fades as it gets older.

Why you might be declined

Lenders can decline for many reasons other than a poor score, such as affordability, a thin credit file, errors, or because you do not meet the lender's own criteria. You can ask the lender why you were declined. If they used a credit reference agency, you have the right to a free copy of the report they used. Keep in mind that each declined application is itself recorded as a search, so applying repeatedly is unlikely to help.

What if you have little or no history?

Young people, people who have recently moved to the UK, and people who have avoided credit can have "thin" files. Ways to build a history over time include registering on the electoral roll, using a credit card or credit builder product responsibly and paying in full, and making sure phone and utility accounts are paid on time. Some services can add rent payments to your credit file. See our guide to improving your credit score.

Next steps

Start by checking your reports with all three agencies. You can do this for free; our guide to checking your credit report explains how. Look for errors, then take steps to improve your position.

Frequently asked questions

What is a good credit score in the UK?

It depends on the agency's scale. Each agency publishes bands such as poor, fair, good and excellent. Focus on the report itself and your payment record rather than chasing a particular number.

Does being declined for credit damage my score?

The decision itself is not recorded, but the application leaves a hard search on your file. Several in a short period can reduce your score.

How long do CCJs stay on my credit report?

Six years from the date of the judgment. If you pay in full within one month, the CCJ can be removed from the register. See our guide to CCJs.

Do utility bills and rent affect my score?

Utility accounts can be reported to the agencies, and some services let you add rent payments. Missing payments can harm your score.

Sources and further reading

Understand your credit score — MoneyHelper
Credit reference agencies — Information Commissioner's Office
Checking your credit report — Citizens Advice

This page provides general information only. It is not personalised financial, legal or tax advice, and rules and figures can change. Your situation is unique — please check official sources such as GOV.UK and MoneyHelper, and speak to a qualified, FCA-authorised adviser before making important decisions about your money.

Written by

MoneyBrink Editorial Team — Editorial team

The MoneyBrink Editorial Team researches, writes and reviews every guide on this site. We work from official UK sources such as GOV.UK, the Financial Conduct Authority, MoneyHelper and the Money and Pensions Service, explain things in plain English, and update articles when the rules change. We do not sell financial products and we do not give personal advice.

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