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UK Credit Score: Equifax, Experian, TransUnion — and What

How UK credit scores work across the three agencies, what affects your score, and the practical steps to improve it for mortgages, credit cards, and.

Kike Faúndez
Written by
Founder of CashControlly
Published on 5 min read
Tools5 min read

Unlike the US with its single dominant FICO score, the UK has three main credit reference agencies — Experian, Equifax, and TransUnion — each with different scales and scores. Lenders typically check one or two of these, and a rejection from one lender doesn't mean rejection everywhere.

The three UK credit reference agencies

AgencyScore range"Good" scoreFree access
Experian0–999881+MSE Credit Club, Experian app
Equifax0–1000531+ClearScore (free)
TransUnion0–710566+Credit Karma, NatWest app

What actually affects your UK credit score

  • Payment history (most important): Any missed payments stay for 6 years. Even a single missed payment can drop your score significantly.
  • Electoral roll registration: Being registered to vote at your current address is one of the quickest wins — it confirms your identity and address to lenders.
  • Credit utilisation: Using less than 25-30% of your available credit limit improves your score.
  • Length of credit history: Older accounts help. Don't close old credit cards if you don't need to.
  • Hard searches: Each full credit application leaves a hard search visible for 12 months. Multiple applications in a short period raises red flags.
💡 Register to vote — the fastest free credit score fix Registering on the electoral roll at your current address is free, takes 5 minutes at gov.uk/register-to-vote, and can improve your credit score within a month. It's consistently cited as the single fastest actionable improvement for people new to the UK or who have recently moved.

Building credit from scratch in the UK

  • Get a credit-builder credit card (Aqua, Capital One, Vanquis) — spend a small fixed amount monthly and pay in full every month
  • Never miss a payment — set up a direct debit for the minimum at minimum
  • Keep utilisation low (under 25% of your credit limit)
  • Within 12-18 months of consistent behaviour, scores improve substantially
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About the author

Kike Faúndez
Kike Faúndez
Founder of CashControlly · Santiago, Chile

Enrique 'Kike' Faúndez is an Information Systems and Management Control Engineer from Universidad de Chile, with master’s degrees in Finance from Universidad de Chile and Industrial Engineering from Pontificia Universidad Católica de Chile. He has 15+ years of experience in regulated financial services across finance, operations, and digital product development. He founded CashControlly in Santiago, Chile, with the conviction that personal financial control should not be a privilege, but an accessible and well-designed tool.

Credentials
  • Master's in Finance, Universidad de Chile
  • Master's in Industrial Engineering, Pontificia Universidad Católica de Chile
  • Information Systems and Management Control Engineer, Universidad de Chile
  • AI and ITIL certifications
  • 15+ years in regulated financial services
Learn more about the founder

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