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— not because a single missed payment from years ago usually decides a lender's answer, but because errors, gaps and out-of-date entries on a credit file are more common than people expect, and far easier to sort out with time on your side than mid-application.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
UK lenders draw on three main credit reference agencies — Experian, Equifax and TransUnion. Each holds its own file, built from data reported to it directly by lenders, and the three don't automatically share information. Different lenders check different agencies, or a blend of more than one — so a mortgage lender might see something on your Equifax file that doesn't show on your Experian file, or vice versa. That's why it's worth checking more than one before you apply, rather than assuming a clean report from one agency speaks for all three.
Checking your own credit file first
Each of the three agencies must give you free access to the statutory information it holds. Multi-agency services also exist — services such as CheckMyFile pull data from all three into one report for a monthly fee, a convenient way to see everything at once. It isn't the only way to get the full picture, though: the free statutory reports show the same underlying data, and for most people that's enough — a paid service is a convenience, not a requirement.
Checking your own file is one of the simplest, lowest-cost things you can do before applying — quick, free, and it often turns up something genuinely forgotten: an old default from a phone contract, a small CCJ from years back, an address you've moved out of that's still listed as current. In our experience it's far better to find that now than to have a lender's underwriter find it partway through an application. Checking early — ideally 6–12 months out — gives you time to fix what's straightforward and plan around anything that isn't, rather than finding out under time pressure once a purchase is already moving.
What to look for on your file
Once you've got your reports in front of you, a few things are worth checking specifically:
- Entries older than 6 years that should have gone. CCJs, defaults, IVAs and bankruptcies are each meant to drop off 6 years after the relevant date — judgment date for a CCJ, default date for a default, start date for an IVA, order date for a bankruptcy (usually discharged after around 12 months). Occasionally an entry that should have been removed is still showing — worth flagging if so.
- Wrong dates or amounts. A wrong date can affect when an entry drops off; a wrong amount can make a debt look worse than it was.
- Paid items still showing as unpaid. A settled debt, default or CCJ should carry a "satisfied" marker, not an unsatisfied one.
- Accounts you don't recognise. Could be a reporting error, or a sign someone else has used your details — worth investigating either way.
- Financial associations and linked addresses. Joint accounts, a former partner, or a shared address can leave a "financial association" linking their history to yours. If it's out of date, it's usually removable.
- Electoral roll registration. Not being registered at your current address is one of the most common, and fixable, gaps — a short form, typically a few weeks to show once submitted.
How to dispute or correct an error
If you find something wrong, the general order to work through is:
- Go to the creditor first, where the error relates to a specific account. They hold the record, and asking them directly to correct it, in writing with any evidence you have, is often faster — they then update the credit reference agency themselves.
- Go to the agency if the creditor doesn't resolve it, the account no longer exists, or the issue is broader — a wrong address, or an unfamiliar financial association. Each agency runs its own dispute process, and by law has 28 days to investigate once raised.
- Add a Notice of Correction if a disputed entry stays on file and you want lenders to see your side — a short, factual statement, up to 200 words, sitting alongside the entry. It won't remove the entry, but an underwriter then sees your explanation, not just the raw record.
One CCJ-specific point: pay in full within one calendar month of judgment and you can apply to the court (form N443, small fixed fee) for a Certificate of Cancellation, removing it from the register entirely. Pay later and the same form gets a Certificate of Satisfaction instead — the entry still stays on file the full 6 years, but marked satisfied rather than outstanding. Courts and creditors don't do this automatically; it's on you to apply.
Where an entry relates to a debt management plan, an IVA or bankruptcy, we can advise how it's likely to be viewed as part of 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 — a card, a loan, a full mortgage application — and stays visible to other lenders for a period; several in a short space of time can look like credit-seeking. A soft search doesn't have that effect and isn't visible to other lenders — that includes checking your own report and many lenders' initial decision-in-principle checks.
Talking to us about your situation is a soft search too, or in many cases no credit check at all — an initial conversation doesn't touch your file, so there's no reason to hold off out of concern it'll affect your score.
Your 6–12 month checklist
If you're planning to apply for a mortgage sometime in the next year, a rough timeline to work to:
- 6–12 months out: check all three agencies, correct anything wrong, register on the electoral roll if needed, and pay down card balances.
- 3–6 months out: avoid new credit applications if you can help it — multiple hard searches in a short window are things many lenders' recency rules look at (commonly falling at 12, 24 or 36 months), with the effect largely fading by around 3 years but most visible right before applying.
- 1 month out: a final check that everything fixed has updated, your electoral roll registration is showing, and nothing new has appeared.
Applying sooner than that? Focus on what's still fixable — electoral roll, an obvious error, not applying for anything else — rather than assuming a shorter runway rules everything out. For how recency and severity interact for specific 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, whichever agency or service you use, is a soft search — it's invisible to other lenders and has no effect on your score. You can check as often as you like.
Which agency do lenders use?
It varies. Lenders may check any one of the three agencies, or more than one, which is exactly why a clean file with one doesn't guarantee a clean file with the others — checking all three, or using a service that combines them, gives you the fuller picture.
How long do corrections take?
Agencies have up to 28 days to investigate a dispute once raised. A correction made directly with 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?
Being financially linked to someone — a joint account, a joint mortgage, or a shared address — can create a "financial association" that shows their history alongside yours, even on an application in your name alone. It's worth checking your own file for these, and mentioning it to us early rather than it surfacing 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 underlying data with their own model. A high score built on an incomplete file isn't as useful as an accurate one, so it's usually better to spend your time correcting genuine errors 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. Once it's dropped off it shouldn't appear on your report at all, though a mortgage application form may still ask directly whether you've ever had a CCJ or been made bankrupt — a separate question to answer honestly, regardless of what your file shows.
Capital Mortgage Advice opens its full advice service in September 2026 — until then, this guide is for information only, not a recommendation about any specific lender, product or course of action regarding an existing debt. Join the launch list to hear when advice goes live.
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 information, not financial advice.