Which credit reference agency do mortgage lenders use in the UK?

Different lenders use different agencies — some check just one, while others check two or all three. There is no single "best" agency to focus on. Checking your report with Experian, Equifax and TransUnion before applying gives you the most complete picture.

Can I correct mistakes on my credit report?

Yes. If you spot an error you can raise a dispute directly with the credit reference agency, which is required by law to investigate within 28 days. If the information is found to be inaccurate, it must be corrected or removed. You can also add a "notice of correction" — a short statement explaining any circumstances behind a negative entry.

Do all lenders report to every credit reference agency?

No. Lenders choose which agencies they report to, and some only report to one or two. This is why your credit file can look different at each agency. Checking all three before a mortgage application is a sensible precaution.

What is a Credit Reference Agency? Meaning Explained

A credit reference agency (CRA) gathers information about your financial behaviour from banks, credit card providers, utility companies and public records. It compiles this into a credit report that lenders can access when you apply for a mortgage or other form of credit.

The three main CRAs operating in the UK are Experian, Equifax and TransUnion. Each holds slightly different data because not all creditors report to every agency. This means your credit report — and the score derived from it — can differ between agencies.

Your credit report includes details such as your current and past credit accounts, payment history, any defaults or CCJs, electoral roll registration, and financial associations with other people (for example, a joint mortgage). Lenders use this information alongside their own affordability checks to decide whether to offer you a mortgage and at what rate.

You have the legal right to access your statutory credit report from each agency. Services like ClearScore (Equifax), Credit Karma (TransUnion) and Experian's free membership allow you to check your report regularly at no cost.

Example

Before applying for a mortgage, James checks his credit report with all three UK agencies. He discovers that Equifax still shows an old address, so he updates it to ensure his electoral roll registration matches. His broker then runs a soft search through a sourcing system that checks multiple lenders without leaving hard footprints on his file.

Key Points

The three main UK CRAs are Experian, Equifax and TransUnion
Each agency may hold slightly different data, so it is worth checking all three
You have a legal right to access your statutory credit report for free
Lenders typically check one or more CRAs as part of the mortgage application process
Errors on your credit report can be disputed directly with the relevant agency