Mistake on Your Credit File? How to Dispute a Wrong Default and Get It Corrected (UK)
Your credit file follows you into almost every big financial decision — a mortgage, a car loan, a mobile contract, sometimes even a job or a rented flat. So when it contains a mistake — a default that should not be there, a missed-payment marker for a payment you actually made, a debt showing as owing after you cleared it, or an account that is not even yours — it can quietly cost you thousands, or a refusal you never see the real reason for. The good news: you have a clear legal right to have inaccurate information corrected, and the process is free.
General information for the UK. Not legal or financial advice. Current as at August 2026 — always check the current position before you act.
The core right: under UK GDPR (Article 16, the right to rectification) and the Data Protection Act 2018, you can require an organisation to correct personal data about you that is inaccurate or incomplete. Credit files also have their own older, specific mechanism: section 159 of the Consumer Credit Act 1974 lets you formally require a credit reference agency to remove or amend an entry you say is incorrect and prejudicial — the agency then has 28 days to act or explain. Your credit record is personal data held by lenders and by the credit reference agencies, so both routes apply to it. The key word is inaccurate — this is a route to fix what is wrong, not to erase what is simply true and unflattering.
Who holds your data — and who to challenge
There are three main credit reference agencies (CRAs) in the UK: Experian, Equifax and TransUnion. Each holds its own file, and lenders do not all report to all three — so a mistake can appear on one file and not another. Check all three (you can see your statutory credit report for free). Behind the CRA sits the lender or organisation that supplied the data (the bank, the finance company, the utility). Because the lender owns the accuracy of what it reports, the fastest fix is usually to challenge both: raise a dispute with the CRA, and complain to the lender.
The mistakes worth disputing
- A default recorded on the wrong date — this matters, because a default drops off your file six years after the default date, so a wrong date can keep it there longer than it should be;
- A debt showing as owing after you paid it, or a settled/satisfied account still marked as in default;
- Late-payment markers for payments you actually made on time (or that were the lender’s error);
- An account, default or search that is not yours at all — often a sign of identity theft, mistaken identity, or a data-entry error;
- A debt that is statute-barred or otherwise wrong in law still being reported incorrectly;
- Someone financially “linked” to you wrongly — an ex-partner or former flatmate you no longer share finances with, whose file is dragging yours down. You can ask for a notice of disassociation to break that link.
The myth that wastes people’s time
You cannot force a lender or CRA to remove information just because it is negative. If a default is accurate — you did miss the payments — it stays for six years, and no letter, and certainly no paid “credit repair” firm, can lawfully delete it. The rectification right fixes what is wrong. Where the record is right but there is a fair explanation (a bereavement, illness, a job loss), the tool is a Notice of Correction, not deletion — see below.
How to dispute a mistake — step by step
- Get your report and pinpoint the error. Note the account, the exact entry, and why it is wrong — the correct date, the payment you made, the fact the account is not yours. Gather any proof (bank statements, a settlement letter, correspondence).
- Raise a dispute with the credit reference agency. Each of Experian, Equifax and TransUnion has a free dispute process. The CRA will investigate — typically it aims to resolve it within about 28 days — by going back to the lender that supplied the data, and it should mark the entry as “disputed” while it does, so lenders viewing your file see it is under query.
- Complain to the lender at the same time. Because the lender is the source, a direct complaint often fixes it faster. Set out the error, attach your proof, and ask it to correct the data with all three CRAs and confirm in writing.
- Keep the paper trail. Dates, reference numbers and copies matter if you have to escalate.
The Notice of Correction almost nobody uses
If a dispute is not resolved in your favour but you have a genuine explanation, section 159 of the Consumer Credit Act 1974 lets you add a Notice of Correction — a factual statement of up to 200 words — to your file. You must file it separately with each of the three agencies (adding it to one does not copy it across), and it is free. Lenders are expected to read it when they assess you manually. It is the right tool where the entry is technically accurate but the full story matters; it will not, on its own, change an automated credit score.
If it still is not fixed: how to escalate
If the lender refuses to correct a genuine error, you have two free escalation routes, and they cover different things:
- The Financial Ombudsman Service (FOS) — for complaints about a financial firm’s conduct, including inaccurate credit reporting. Complain to the lender first and let it issue a final response; you then normally have six months from that response to take it to the Ombudsman, which is free and can order the firm to correct the data and sometimes pay compensation for the impact.
- The Information Commissioner’s Office (ICO) — the data-protection regulator, for a breach of your data rights (inaccurate personal data that has not been corrected). The ICO will not award you compensation, but it can take up the accuracy issue with the organisation.
If inaccurate data has caused you real financial loss or distress, you may in principle have a separate claim for compensation under data-protection law — but that is a court route, and the bar is higher, so the practical first steps are the CRA dispute, the lender complaint and, if needed, the Ombudsman.
A word on checking your own file: looking at your own credit report is a “soft” check that only you can see — it does not harm your score. Ignore anyone who tells you otherwise, and never pay a “credit repair” company to do what you can do yourself for free.
Getting the letter right
A clear, firm written dispute is what turns “computer says the data is right” into a proper investigation the lender and agency have to carry out. A good letter identifies the exact entry and why it is inaccurate, states that you are exercising your right to rectification under Article 16 of the UK GDPR, attaches your evidence, and asks the lender to correct the record with all three credit reference agencies and confirm in writing — making clear you will escalate to the Financial Ombudsman or the ICO if it is not fixed. It also gives you the paper trail you need if it goes further.
Generate Your Credit File Dispute Letter in Seconds
WriteMyLegalLetter drafts a clear, firm letter to your lender and credit reference agency setting out the mistake, your right to have inaccurate data corrected under the UK GDPR, and the deadline to fix it before you escalate to the Financial Ombudsman or the ICO. Answer a few questions and your letter is ready to send.
Write My Letter Now →Data-protection law and the Financial Ombudsman Service apply UK-wide, so this route is the same in England, Wales, Scotland and Northern Ireland. Sources: UK GDPR Article 16 (right to rectification) and the Data Protection Act 2018; Consumer Credit Act 1974 s.159 (correction of wrong information / Notice of Correction); Information Commissioner’s Office guidance on credit reference agencies and rectification; Financial Ombudsman Service guidance on credit-file and credit-reference complaints; Experian, Equifax and TransUnion dispute processes. Current as at August 2026. General information, not legal or financial advice — check the current position before you act.