Credit Scores Explained
Your credit score is a number that's meant to sum up how reliable you look to lenders, but it's widely misunderstood. There isn't one official score, there are three credit reference agencies, each with its own scale, and lenders don't actually use the number you see anyway. What really matters is the information in your credit report and how you manage credit over time. This guide explains how scores work, what affects them, and the myths to ignore, so you can focus on the things that genuinely make a difference.
- ✓There's no single 'universal' credit score, the three agencies (Experian, Equifax and TransUnion) each use a different scale.
- ✓Lenders don't use the headline score you see; they run your underlying report data through their own scoring models.
- ✓The biggest factor is your track record of paying on time, followed by how much of your available credit you use.
- ✓Checking your own score or report is a 'soft search' and never harms it.
- ✓There's no such thing as a credit 'blacklist', and your income isn't recorded on your credit file.
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England, Scotland, Wales & Northern Ireland.
The three credit reference agencies
Three agencies hold credit information on UK adults, and each gives you a score on its own scale:
- ✓Experian, scored out of 999
- ✓Equifax, scored out of 1,000
- ✓TransUnion, scored out of 710
Because the scales differ, you can't compare the numbers directly, a score of 880 with one agency isn't ‘worse’ than 700 with another, they're just measured differently. Each agency may also hold slightly different information about you, which is why your score varies between them.
Lenders don't use your headline score
This surprises people: the score you see in an app is an educational guide, not the figure a lender uses. When you apply, the lender:
- ✓Looks at the underlying data in your credit report, not the consumer score
- ✓Runs it through their own scoring model, which weights things their way
- ✓Combines it with information you give them, such as income and outgoings, and their own lending rules
What affects your score
- ✓Payment history, paying on time, every time, is the single biggest factor; missed or late payments hurt
- ✓Credit utilisation, how much of your available credit you're using; keeping well below your limits helps
- ✓Length of credit history, older, well-managed accounts count in your favour
- ✓Electoral roll, being registered to vote helps confirm your identity and address
- ✓Recent applications, several credit applications in a short time can look risky (each leaves a 'hard search')
- ✓Public records, defaults, County Court Judgments (CCJs) and bankruptcy have a big negative effect
- ✓Financial associations, being linked (for example a joint account) to someone with poor credit can affect you
Common credit score myths
- ✓Checking your own score doesn't harm it, that's a 'soft search', visible only to you
- ✓Your income, savings, and whether you're employed are not on your credit report
- ✓Previous occupants of your address don't affect your score; you're only linked to people you have joint finances with
- ✓There's no quick fix, and firms that promise to 'wipe' bad-but-accurate information for a fee can't deliver
- ✓Being in your overdraft or having credit cards isn't automatically bad, it's how you manage them that counts
What to do next
The practical steps are simple: check what's on your credit report (it's free), fix any errors, and follow our guide on improving your credit score. If you're struggling with debt rather than just your score, see our dealing with debt guide, free help is available and you should never pay for debt advice.
Get instant help right now
A Citizens Advice appointment can take weeks. Our free assistant is available 24/7 with no appointment, giving you clear, step-by-step answers about your exact situation, what to do next, and the deadlines that matter.
Need to take action? It can draft a ready-to-send formal letter for you (optional, from £4.99).
England, Scotland, Wales & Northern Ireland.
Frequently asked questions
What is a good credit score in the UK?
It depends on which agency you're looking at, because they use different scales: Experian scores out of 999, Equifax out of 1,000, and TransUnion out of 710. Each has its own 'good' and 'excellent' bands. But the headline number is only a guide, lenders don't use it directly; they assess the underlying information in your credit report against their own rules, so focus on that rather than a specific number.
Does checking my credit score lower it?
No. Checking your own score or credit report is a 'soft search', which only you can see and which never affects your score, you can check as often as you like. It's only 'hard searches', which happen when you apply for credit, that are visible to lenders and can have a small, temporary effect, especially if you make several in a short time.
Why is my credit score different on different sites?
Because each site uses a different credit reference agency, and the three agencies use different scales (out of 999, 1,000 and 710) and may hold slightly different information about you. None is the 'real' score, they're all educational guides. Lenders use the underlying report data with their own models, so a different number on each site is completely normal.
Is there a credit blacklist?
No. There is no credit 'blacklist' that bans people from getting credit. Each lender makes its own decision based on the information in your credit report and its own lending criteria. If you've been refused, it's worth checking your report for errors or negative entries rather than assuming you've been blacklisted.
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