Checking your credit score should never cost you money — yet many people still aren't sure how to do it properly, or assume a single score tells the whole story. Here's a clear guide to checking your UK credit file for free, and why using more than one source matters.
The three main UK credit reference agencies
The UK has three primary credit reference agencies (CRAs): Experian, Equifax and TransUnion. Each independently collects data from lenders, utility providers and public records, meaning they don't always hold identical information about you — which is why checking only one can give an incomplete picture.
How to check each one for free
- Experian: Offers a free statutory credit report, and free ongoing access to your Experian Credit Score via their own free membership tier.
- Equifax: Accessible for free via partner services such as ClearScore, which uses Equifax data to provide an ongoing free score and report.
- TransUnion: Accessible for free via partner services such as Credit Karma UK, which uses TransUnion data.
You're also legally entitled to request your statutory credit report directly from each CRA for free under UK data protection law — this is the most complete underlying data, though the free ongoing "score" apps built on top are generally easier for regular monitoring.
Do these checks affect your credit score?
No. Checking your own credit report or score is recorded as a "soft search," visible only to you, and has no impact whatsoever on your credit score. This is different from a "hard search," which occurs when you actually apply for credit and is visible to other lenders. You can check your own score as often as you like without any negative effect.
Why your score differs between agencies
It's common — and entirely normal — to see different scores from Experian, Equifax and TransUnion for the same person at the same time. This happens because: each agency may hold slightly different data (not every lender reports to all three); each uses its own proprietary scoring model and scale (Experian's score, for example, uses a different range to Equifax's or TransUnion's); and the timing of data updates can vary between agencies. See our companion guide on why your credit score differs across platforms for a deeper explanation.
What to actually look for on your report
- Personal details: Confirm your name, address history and date of birth are accurate and up to date.
- Electoral roll status: Check whether you're correctly registered, as this significantly affects lender confidence in verifying your identity.
- Account history: Review every credit account listed — cards, loans, mobile contracts — checking for accuracy of balances and payment history.
- Missed payments or defaults: Confirm any negative marks are accurate and correctly dated.
- Financial associations: Check for any linked accounts (such as a joint account or joint mortgage) with people you're no longer financially connected to, which could be dragging your profile down.
- Hard search history: Review recent credit applications to spot any you don't recognise, which could indicate fraudulent activity.
How often should you check?
Checking every few months is generally sufficient for most people, though it's worth checking more closely in the run-up to a major application (such as a mortgage), and immediately if you suspect identity fraud or notice anything unusual on a statement.
What if you find an error?
If you spot inaccurate information, you have the right to dispute it directly with the credit reference agency, who must investigate and correct genuine errors — see our step-by-step guide on fixing errors on your credit report.
The bottom line
Checking your credit score is free, has no negative impact on your score, and is one of the simplest, highest-value habits in personal finance. Because Experian, Equifax and TransUnion can each hold different data, checking all three — even if only occasionally — gives you the fullest and most accurate picture of how lenders see you.