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There is no single “good” credit score in the UK, because there is no single UK credit score. Experian, Equifax and TransUnion each run their own scale, with their own ranges and their own labels such as poor, fair, good or excellent, and mortgage lenders then apply their own scoring and criteria on top of whichever agency’s report they use. A score that looks “good” in one app is a rough, general-purpose summary, not a fixed number a lender checks against.
That doesn’t mean the concept of a good score is meaningless. It’s just less precise, and less directly tied to a mortgage decision, than it can appear.
Why there isn’t one scale
Each of the three main credit reference agencies builds its own scoring model from the data it holds. They don’t always hold identical information, since not every lender or provider reports to every agency, and each one turns that data into a score using its own formula and its own range. That’s why the same person’s file can be labelled differently depending on which agency, or which free app, they check.
| What it measures | Who sets the labels | |
|---|---|---|
| Experian | Its own version of your credit history | Experian’s own scale and bands |
| Equifax | Its own version of your credit history | Equifax’s own scale and bands |
| TransUnion | Its own version of your credit history | TransUnion’s own scale and bands |
None of these is “the” official UK score. They’re three separate consumer-facing summaries of broadly similar, but not identical, underlying data.
What generally makes a score “good”
Even without one fixed scale, the agencies broadly reward similar things when they calculate a score:
- A track record of paying on time. Consistent, on-time payments across your accounts tend to matter more than almost anything else.
- Low credit utilisation. Using a small share of your available credit, particularly on cards, is generally viewed more favourably than running close to your limits.
- A longer credit history. Older accounts, kept in good order, tend to help more than a very thin or very new file.
- A mix of credit managed well. Successfully managing different types of credit over time can support a stronger score, though this matters less than payment history and utilisation.
- Being on the electoral register. This helps agencies and lenders verify your identity, which supports your file more generally.
- Few recent hard searches. Several credit applications in a short space of time can suggest financial pressure to a scoring model, even if each application was successful.
None of these is a guarantee on its own, and a genuine error, such as an account that isn’t yours, can drag down an otherwise strong file until it’s corrected.
Does a good score mean adverse credit isn’t on your file?
Not necessarily. A single default, CCJ or missed payment doesn’t automatically pull a score down to “poor”, especially once it’s older or settled, and consumer scoring models vary widely in how heavily they weigh one item against an otherwise strong file. This is part of why two people can each have “one CCJ from a few years ago” and see quite different scores in the same app.
If you know your file has adverse credit and want to understand it on its own terms, rather than through a single score, our guide on what is impaired credit covers the different types of entry lenders actually look at.
Why “good” doesn’t tell a mortgage lender what to do
This is the point that matters most for anyone planning a remortgage. Mortgage lenders don’t see, or use, the labelled score you see in a consumer app. They pull your credit report and run their own internal scoring and lending criteria against it, alongside a full assessment of your income, outgoings and the loan-to-value of the borrowing. Our guide on which credit score mortgage lenders actually use goes into this gap in detail.
The practical effect is that a “good” consumer score doesn’t guarantee a mortgage offer, and a “poor” one doesn’t rule every lender out. Our guide on what credit score you need for a mortgage explains why there’s no fixed minimum, and what tends to carry more weight than the number itself.
Checking where you actually stand
Rather than fixating on a single label, it’s worth looking at what’s actually recorded. Everyone is entitled to a statutory credit report free from each agency: Experian, Equifax and TransUnion. Checking all three, rather than just one, gives a fuller picture, since coverage can differ between them. If you find a genuine error, you can ask the relevant agency to investigate and correct it.
What this means if you’re remortgaging with bad credit
If your score looks lower than you’d like, or you simply don’t know what it is, don’t treat the label as the final word on whether a remortgage is possible. What matters more is what’s actually on your report: the type of any adverse entries, how old they are, whether they’re settled, your current income and outgoings, and the loan-to-value you’re looking for. Some lenders specialise in bad credit remortgages and look at that fuller picture rather than a single figure, including for people with a thin credit file rather than negative entries as such.
If part of the picture involves other debts you’re weighing up whether to deal with through your remortgage, our page on debt consolidation remortgages explains the risks of securing them against your home. If money is genuinely tight, free and impartial guidance is available from MoneyHelper, StepChange or National Debtline before you take on any new borrowing.
Frequently asked questions
Is a good credit score the same at Experian, Equifax and TransUnion?
No. Each agency uses its own scale and its own formula, so a score that one agency labels good could sit at a different point on another agency's range. Checking only one app can give a partial picture, since not every account is reported to every agency.
Does a good credit score guarantee a mortgage?
No. A good consumer score is a rough summary, but mortgage lenders apply their own scoring and criteria to your full credit report, plus your income, outgoings and the loan-to-value involved. A good score is a helpful sign, not a guarantee.
Can you have a good score with a default or CCJ on file?
It's possible, particularly if the entry is old, small, or settled, and the rest of your file is otherwise strong. Consumer scoring models vary in how heavily they weigh a single item, so a good headline score doesn't always mean a completely clean file.
What single thing improves a credit score the most?
There isn't one single fix. Paying everything on time consistently, keeping credit card use well below your limits and correcting any errors on your file tend to matter most over time, alongside simply letting old problems become less recent.