Your credit report before applying for a mortgage
Quick summary: before you apply for a mortgage, it's worth taking a proper look at your own credit report — not because a single missed payment from years ago usually decides a lender's answer, but because errors, gaps and out-of-date entries on a credit file are more common than people expect, and far easier to sort out with time on your side than mid-application. Three UK agencies — Experian, Equifax and TransUnion — each hold a separate file, so a clean file with one doesn't guarantee a clean file with another. Most of what's worth fixing (a wrong address, an old debt that should have dropped off, a paid item still showing as outstanding) can be corrected well before you apply, and checking your own file never affects your score.
The three credit reference agencies
Credit reference agencies are the companies that keep the credit files lenders check. UK lenders use three main ones: Experian, Equifax and TransUnion. Each keeps its own file on you, built from what lenders report to it, and they don't automatically share it. Lenders check one agency or several, so something might show on your Equifax file but not your Experian file, or the other way round. Check more than one before you apply.
Checking your own credit file first
Each agency must give you free access to your statutory report (the basic copy the law entitles you to). Paid services such as CheckMyFile pull all three into one report for a monthly fee, which is handy, but the free reports show the same information, and for most people that's enough.
Checking is quick and free, and often turns up something forgotten: an old default (a record that you fell seriously behind on an account) from a phone contract, a small County Court Judgment (CCJ, a court order saying you owe money) from years back, or an old address still listed as current. In our experience it's far better to find it now than have a lender's underwriter (the person who assesses your application) find it mid-application. Checking early, ideally 6–12 months before you apply, gives you time to fix what's simple and plan around what isn't, without the pressure of a purchase under way.
What to look for on your file
When you have your reports, check for:
- Entries more than 6 years old that should have gone. CCJs, defaults, IVAs (Individual Voluntary Arrangements, a formal deal with the people you owe) and bankruptcies should each drop off 6 years after the relevant date: the judgment date for a CCJ, the default date for a default, the start date for an IVA, and the order date for a bankruptcy (usually discharged, or ended, after around 12 months). Occasionally one is still showing; flag it if so.
- Wrong dates or amounts. A wrong date can change when an entry drops off. A wrong amount can make a debt look worse than it was.
- Paid debts still showing as unpaid. A debt, default or CCJ you've paid should be marked "satisfied".
- Accounts you don't recognise. It could be a reporting mistake, or a sign someone else has used your details; look into it either way.
- Financial associations and linked addresses. A joint account, an ex-partner or a shared address can leave a "financial association" that links their credit history to yours. If it's out of date, it can usually be removed.
- Electoral roll registration. Not being registered to vote at your current address is one of the most common gaps, and one of the easiest to fix: a short form, typically showing within a few weeks.
How to dispute or correct an error
If you find something wrong, work through it in this order:
- Go to the creditor first (the company you owe or owed money to), if the mistake is about one account. They hold the record, so asking them in writing, with any evidence you have, is often quicker, and they then update the agency themselves.
- Go to the agency if the creditor doesn't sort it out, the account no longer exists, or the problem is wider, such as a wrong address or a financial association you don't recognise. Each agency has its own dispute process, and by law has 28 days to investigate once you raise it.
- Add a Notice of Correction if a disputed entry stays on your file and you want lenders to see your side: a short, factual statement of up to 200 words next to the entry. It won't remove the entry, but an underwriter will see your explanation, not just the record.
One point just for CCJs: pay in full within one calendar month of the judgment and you can apply to the court (form N443, small fixed fee) for a Certificate of Cancellation, which removes it from the register completely. Pay later and the same form gets you a Certificate of Satisfaction instead: the entry stays on file for the full 6 years, but marked satisfied (paid) rather than outstanding. Courts and creditors don't do this for you; you have to apply.
Where an entry is about a debt management plan (an informal plan to repay debts in smaller amounts), an IVA or bankruptcy, we can advise how it's likely to be viewed in a mortgage application, but we advise on the mortgage, not the arrangement itself. For the arrangement, Citizens Advice, StepChange and National Debtline all offer free, confidential help.
Soft searches, hard searches, and talking to us
Your file also records searches. A hard search happens when you formally apply for credit, such as a card, a loan or a full mortgage application. Other lenders can see it for a while, and several close together can look as though you're chasing credit. A soft search has no such effect and other lenders can't see it. That includes checking your own report and many lenders' first decision-in-principle checks (an early estimate of how much a lender might lend you).
Talking to us is a soft search too, or often no credit check at all, so there's no need to hold off for fear of your score.
Your 6–12 month checklist
Applying in the next year? A rough timeline:
- 6–12 months before: check all three agencies, correct anything wrong, register on the electoral roll if needed, and pay down card balances.
- 3–6 months before: avoid applying for new credit if you can. Hard searches typically stay visible on your file for around 12 months, and several in a short spell just before you apply are what lenders tend to notice most.
- 1 month before: a final check that everything you fixed has updated, your electoral roll registration is showing, and nothing new has appeared.
Applying sooner? Focus on what you can still fix (the electoral roll, an obvious mistake, not applying for anything else) rather than assuming a shorter run-up rules everything out. To see how recency (how long ago) and severity (how serious) work together for particular issues, see the timeline tool on our bad-credit pages.
FAQ
Does checking my own credit report hurt my score?
No. Checking your own file, through any agency or service, is a soft search: other lenders can't see it and it doesn't affect your score. Check as often as you like.
Which agency do lenders use?
It varies: a lender may check any one of the three, or more than one, so a clean file with one doesn't necessarily mean a clean file with the others. Check all three, or use a service that combines them.
How long do corrections take?
Agencies have up to 28 days to investigate a dispute once it's raised. Going directly to the original creditor can sometimes be quicker; anything involving a court record can take a little longer.
What if my partner has credit issues but I don't?
A joint account, joint mortgage or shared address can create a "financial association" that shows their history alongside yours, even if you apply alone. Check your file for these, and tell us early so it doesn't come up mid-application.
Do I need a "good score", or just an accurate file?
An accurate file matters far more than the headline score. Lenders typically don't use the number your app or report shows you; they assess the information underneath with their own scoring method. A high score based on an incomplete file isn't much use, so it's usually better to spend your time correcting genuine mistakes than chasing a higher score.
Will an old CCJ or default still show after 6 years?
Not normally. CCJs, defaults, IVAs and bankruptcies are each designed to drop off 6 years after the relevant date (see the list above). But a mortgage application form may still ask directly whether you've ever had a CCJ or been made bankrupt. Answer that honestly, whatever your file shows.
General patterns around credit issues and mortgage assessment reflect standard UK consumer credit law and mortgage industry practice, checked August 2026 — no figures or thresholds here are specific to any single lender, and actual acceptance criteria vary and change over time. If you're struggling with debt, free and confidential guidance is available from organisations such as Citizens Advice or StepChange. This guide is general information, not a personal recommendation.
