Who are the big 3 credit reference agencies in the UK?
The three main credit reference agencies (CRAs) in the UK are Experian, Equifax, and TransUnion. They collect and maintain financial data on millions of UK consumers and businesses, including credit account history, payment records, electoral roll information, and public records such as County Court Judgements (CCJs). Lenders use CRA data to assess creditworthiness when you apply for credit, a mortgage, or in some cases a rental property.
What is the difference between the three UK credit agencies?
Each CRA holds slightly different data, calculated into different credit scores using their own algorithms. Experian is the UK’s largest CRA by market share; Equifax is used by many high-street lenders; TransUnion (formerly Callcredit) powers consumer services including ClearScore. Not all lenders use all three CRAs — some use only one. Your credit score can vary between agencies because not all lenders report to all three.
How does open banking relate to credit reference agencies?
Open banking data and CRA data are complementary: CRAs hold historical credit records, while open banking provides real-time transaction data. Some UK fintechs — such as Pave and Credit Kudos — use open banking to supplement CRA data, helping lenders make more accurate decisions for consumers with thin credit files. Credit Kudos was acquired by Apple in 2022, signalling interest from big tech in open banking credit data. TransUnion itself has invested in open banking-enabled credit products.
Open Banking in Practice: All three UK CRAs are regulated by the FCA as credit reference agencies and by the ICO under UK GDPR. Consumers have the right to a free statutory credit report from each agency. Free consumer-facing services include ClearScore (TransUnion), Experian free (Experian), and CreditExpert (Experian paid). Read our guide to understanding your credit file and open banking on openfuture.world.
FAQ
How do I check my credit report for free in the UK?
Access your TransUnion report via ClearScore, your Experian report via Experian’s free service, and your Equifax report via ClearScore or direct from Equifax.
Does open banking affect my credit score?
No — open banking connections do not appear on your credit file; only hard credit searches from applications affect your score.
What is Credit Kudos and how does it use open banking?
Credit Kudos was a UK fintech using open banking data for credit decisions; it was acquired by Apple in 2022 and its open banking credit technology may be integrated into Apple’s financial services.