Credit Score Guide

Learn how credit scores work in the UK and practical steps to improve your financial reputation

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Reviewed by Grow Your BusinessLast updated 26 July 2026

What is a credit score?

Your credit score is a numerical snapshot based on your credit report, calculated by agencies like Experian, Equifax, and TransUnion.

How it works

Lenders use your report to decide whether to lend to you and at what interest rate.

Report history

Your report tracks your repayment history on credit products over the last six years.

The agencies

Experian

Often used by larger high-street banks.

Equifax

Commonly used by various lenders for credit assessments.

TransUnion

Often used by credit comparison apps.

Why it matters

A strong score is essential for:

  1. 1

    Cheaper borrowing

    Low rates are only offered to those with excellent scores.

  2. 2

    Ease of approval

    Many lenders will automate rejections for low or thin credit files.

Building your credit

You can improve your score if you are:

How to compare agencies

Follow these steps to make an informed choice:

  1. 1

    Check all three

    Lenders might look at different ones, so check them all.

  2. 2

    Check for errors

    Look for incorrect addresses or debts you don't recognise.

Pros and Cons of checking

Pros

  • Early error detection
  • Helps in planning for large loans
  • Builds financial discipline

Cons

  • Requires regular checks
  • Some apps offer trial subscriptions

Why care?

A single mistake can cost thousands in interest over a mortgage term.

Potential risks

Engaging with ignoring your credit report requires care to ensure you don't overpay or miss critical protections.

For energy, failing to switch or manage your smart meter can lead to higher costs. For finance, errors on your report can lead to loan rejections.

Always use verified, independent sources like Ofgem or regulated financial services to compare options.

Alternatives

To build a better financial picture:

Credit builder cards

Used sensibly, they help demonstrate reliable repayment habits.

FAQs

About this guide

Written and reviewed by the Grow Your Business team, and kept up to date as rates, rules and provider terms change.

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