What a UK credit score actually is
A UK credit score is a three-digit summary of your credit history, calculated by one of three credit reference agencies (CRAs) using data lenders share with them. It is not a single universal number. Every UK adult has three credit scores at any given time, one from each of the three CRAs.
The score itself is just a snapshot of the underlying credit report. The report is what lenders genuinely care about, the score is a quick way to see where your file sits on each agency's scale.
Lenders do not use the score you see on the app
The "credit score" you see on Experian, ClearScore, Credit Karma or MoneySavingExpert's Credit Club is an educational score. It shows roughly how the data on your file looks. When you actually apply for credit, the lender runs your data through their own internal scoring model. Your application can succeed even with a "Fair" score on Experian, or fail with an "Excellent" one. The score is a guide, not a guarantee.
The three credit reference agencies
Three CRAs operate in the UK: Experian, Equifax and TransUnion. They are private companies, regulated by the Financial Conduct Authority. Each runs its own database, populated from data lenders voluntarily share with them.
Most major UK lenders share data with at least two CRAs. Some only share with one. That is why your three scores can look very different, the underlying data is not identical.
Sources: Experian score bands, Equifax score bands, TransUnion. Comparing scores across CRAs directly is misleading because the scales are completely different.
Why the three scores can look very different
Each CRA holds slightly different data because lenders choose which agencies to share with. Each uses a different formula. Each updates its data on its own schedule. A new credit card might appear on your Experian file before TransUnion. A defaulted account might be reported only to Equifax. Your three scores are three independent assessments of three (similar but not identical) datasets.
What the bands mean on each scale
Each CRA categorises scores into bands. The labels and ranges differ. Below are the current 2026 bands.
| Band | Experian (0-999) | Equifax (0-1000) | TransUnion (0-710) |
|---|---|---|---|
| Excellent | 961-999 | 811-1000 | 628-710 |
| Good / Very Good | 881-960 | 531-810 | 604-627 |
| Fair | 721-880 | 439-530 | 566-603 |
| Poor | 561-720 | 0-438 | 551-565 |
| Very Poor | 0-560 | (merged into Poor) | 0-550 |
Equifax rescaled its UK consumer score from 0-700 to 0-1000 in 2021, a fact that still confuses older guides. The scale you see today is 0-1000.
The 880 versus 700 versus 580 puzzle
An 880 on Experian, a 700 on Equifax and a 580 on TransUnion are roughly equivalent. The numbers look very different but the underlying creditworthiness is similar. Treat each agency's score within its own scale, do not try to convert.
What lenders actually see
When you apply for credit, the lender requests data from one or more CRAs. They get your full credit report, not just the score. Most major UK lenders use Experian or Equifax, TransUnion is smaller but used by Barclays and some specialist lenders.
Information on a UK credit report
- Personal details. Name, date of birth, current and past addresses
- Electoral roll status. Whether you are registered to vote at your current address
- Account history. Every credit account opened, closed or active in the last 6 years (cards, loans, mortgages, mobile phone contracts, utility accounts where the supplier reports)
- Payment history. Whether each account has been paid on time, monthly for up to 6 years
- Public records. County Court Judgments (CCJs), bankruptcies, IVAs, Debt Relief Orders
- Search history. Hard credit searches in the last 12 months
- Linked persons. Anyone you share joint finance with (joint mortgage, joint bank account)
The report is what gets analysed. The score is a quick reading of it. Lenders care far more about the underlying patterns: are you paying on time, how much credit are you using, are there any defaults or court orders, are you applying for lots of credit at once.
What actually moves your score
Five factors do most of the heavy lifting. The rest are minor.
The single biggest factor. Every late payment, missed payment, default, CCJ or IVA is recorded for 6 years. One missed payment hurts. A default can drop a "Good" score into "Poor" overnight. Set up direct debits for at least the minimum on every credit account.
The percentage of your available credit limits you are actually using. Under 30% is good, under 10% is optimal. Using 90% of a credit card limit looks risky to lenders even if you pay on time. Spread balances or ask for a limit increase, do not max anything out.
Being registered to vote at your current address is essential for most lenders. Per Experian, registering can boost your score by up to 50 points. Missing voters are often automatically declined for credit. Free, takes 5 minutes at gov.uk/register-to-vote.
Longer history is better. The average age of your accounts matters. Closing your oldest credit card to "tidy up" can lower your score because it shortens the history. If a card has no annual fee, keep it open even if you do not use it.
Each hard search drops your score by an estimated 5-25 points. Multiple applications in a short period look risky and the impact compounds. Use eligibility checkers (soft searches) to filter products before applying. See our guide on soft search vs hard search for the full picture.
Register on the electoral roll today
If you are not registered, this is the single fastest way to boost your UK credit score. Registration takes 5 minutes online at gov.uk/register-to-vote and updates appear on your credit file within 30 days. According to Experian, this can add up to 50 points. Lenders use the electoral roll to verify your identity, so being on it speeds up applications too.
How long negative marks last
Negative information stays on UK credit files for fixed periods set by the Information Commissioner's Office (ICO). After the period expires, the CRA must remove it.
| Mark | How long | Notes |
|---|---|---|
| Late payment | 6 years | Impact fades dramatically over time |
| Default | 6 years from default date | Stays even if the debt is later paid |
| County Court Judgment (CCJ) | 6 years from judgment date | Removed entirely if paid within 28 days |
| Individual Voluntary Arrangement (IVA) | 6 years from start date | Stays until 6 years even if paid early |
| Bankruptcy | 6 years from order date | Discharged after 12 months but file mark remains |
| Debt Relief Order (DRO) | 6 years from approval | Standard period |
| Hard credit search | 12 months | Visible to lenders for one year |
The 28-day rule that gets a CCJ removed entirely
If you receive a County Court Judgment and pay it in full within 28 days, you can apply to the court to have the CCJ removed from the public register entirely (not just marked as "satisfied"). The CRAs will then remove it from your credit file. After 28 days the CCJ stays on file for 6 years even if paid, although it will be marked as "satisfied". Same-day payment unlocks the cleanest possible outcome.
How to check all three scores for free
Every UK adult has the right to see their full statutory credit report from each CRA for free under the Data Protection Act 2018. Beyond the statutory route, free apps offer ongoing access.
Sign up free at experian.co.uk. Free score and monthly updates. The full Experian Credit Report costs £14.99/month after a free trial, but the score itself is free indefinitely. Alternatively: free statutory report by post.
Sign up free at clearscore.com. Free score and monthly updates from your Equifax data. ClearScore makes money from credit-product recommendations, the score and report are completely free, no trial required. Alternatively: CheckMyFile shows all three.
Sign up free at creditkarma.co.uk or totallymoney.com. Free score and monthly updates from your TransUnion data. Both work the same way as ClearScore.
Checking your own score does not affect it
This is a frequent worry. Checking your own credit score is a soft search and is invisible to lenders. You can check daily if you want. Only hard searches (when a lender checks your file as part of an application) affect your score. See our guide on soft search vs hard search for what counts as which.
Common misconceptions worth unlearning
UK credit scoring has its own folklore. Here is what is wrong, what is right and why it matters.
"There is a UK credit blacklist"
There is no central blacklist. Each lender makes its own decision based on its own scoring model and credit policy. Being declined by one lender does not mean you will be declined by others. Different lenders have different appetites for risk. A specialist lender may approve someone a high-street bank declined.
"My partner's credit score affects mine"
Only if you have joint finance together (joint mortgage, joint bank account, joint loan). Marriage, cohabitation or just sharing an address does not link your credit files. If you do have joint finance, the linked person's credit history can affect lender decisions on your applications, but their score does not literally combine with yours.
"Closing old cards improves my score"
Usually the opposite. Closing old cards shortens your credit history and reduces your total available credit, which raises your utilisation percentage. Both push your score down. Unless a card has an annual fee, leave it open. Use it for a small purchase every few months to keep it active.
"Paying off a default removes it"
It does not. A default stays on your file for 6 years from the original default date, regardless of when (or whether) it is paid. Paying it changes the status to "satisfied" but the entry remains. Only a successful dispute (proving the default was wrongly recorded) can get it removed early.
What actually matters in 2026
Pay everything on time. Stay registered to vote. Keep utilisation under 30%. Avoid bunching credit applications. Check your file annually for errors and dispute anything wrong. Do these five things consistently for two years and your score will be in the upper half of the UK distribution. There is no shortcut, but there is no mystery either.