Credit scores and reports: your complete guide

Your credit score affects everything from loan approvals to mobile phone contracts – here’s how to understand and improve yours.

23 February, 2021

Money skills & financial tips

How credit actually works

Not that long ago, credit was much simpler. If you wanted to borrow money from the local shopkeeper or bank manager, they’d base their decision on knowing you personally – your reputation in the community, whether you’d paid back previous loans, and what other people said about your reliability.

The same basic principle still applies today, but instead of village gossip, your financial reputation is captured in a credit file. This detailed record of your borrowing history gets boiled down to a credit score – usually a number between 0 and 999 that’s supposed to represent how trustworthy you are with money.

Lenders use this information to decide whether to approve your applications and what interest rate to charge you. A higher score generally means better rates and easier approval.

The confusing bit: you have multiple scores

Here’s where it gets complicated – you don’t have just one credit score. You actually have several, because there are three main credit reference agencies in the UK, each holding slightly different information and calculating scores differently:

  • Experian – Scores range from 0-999
  • Equifax – Scores range from 0-700
  • TransUnion – Scores range from 0-710

Each agency might have different information about you, which means your scores can vary significantly between them. Most lenders check with one or more of these agencies, but they don’t all use the same one.

What your credit file actually contains

Your credit file is like a financial CV that includes:

  • Every credit card, loan, mortgage, and finance agreement you’ve ever had
  • Your repayment history – every missed payment, late payment, or default
  • County Court Judgements (CCJs) and bankruptcies
  • How much credit you currently have available and how much you’re using
  • Who you’re financially linked to (through joint accounts or mortgages)
  • Your electoral roll information and address history

Even seemingly unrelated things like mobile phone contracts, utility bills, and “buy now, pay later” agreements can appear on your file if payments are missed.

How to check your credit reports for free

Checking your credit reports is straightforward and completely free. Each agency provides online access:

  • Experian – Direct through their website or app
  • Equifax – Through ClearScore
  • TransUnion – Through CreditKarma

It’s worth checking all three because they often contain different information. You can check as often as you like without affecting your score.

Why checking matters

  • Avoiding nasty surprises – There’s nothing worse than being declined for credit when you thought everything was fine. Checking beforehand shows you what lenders will see and helps you understand your chances of approval.
  • Spotting errors – Credit files regularly contain mistakes – wrong addresses, payments marked as missed when they weren’t, or accounts that don’t belong to you. These errors can seriously damage your score until they’re corrected.
  • Protecting against fraud – Identity theft is increasingly common. Criminals might take out credit cards, mobile contracts, or even loans in your name. Your credit report will show all credit taken out in your name, so regular checking helps spot fraud early.
  • Understanding your financial picture – Seeing everything in one place helps you understand your overall debt situation and plan improvements.

What counts as a good score

This varies significantly between lenders and depends on what you’re applying for. As a rough guide:

Experian (0-999)

  • Fair: 721-880
  • Good: 881-960
  • Excellent: 961-999

Equifax (0-700)

  • Fair: 380-419
  • Good: 420-465
  • Excellent: 466-700

TransUnion (0-710)

  • Fair: 566-603
  • Good: 604-627
  • Excellent: 628-710

Remember though – some lenders are happy with lower scores, while others want near-perfect credit. It also depends on what you’re applying for and your overall financial situation.

How London Mutual Credit Union assesses applications

At London Mutual Credit Union, we take a different approach from many high street lenders. We use manual underwriting, which means every application gets reviewed by a real person rather than just a computer algorithm.

We do check your credit file with one or more of the main agencies – it helps us verify your identity and understand your financial history. But your credit score is just one factor among many that we consider.

What matters more to us is:

  • Whether you can afford the repayments based on your income and expenses
  • Your recent credit behaviour and whether it’s improving
  • Your overall financial situation and what you’re borrowing for
  • Any explanations for past difficulties

This approach means we can often help people who might be automatically declined elsewhere, even if their credit score isn’t perfect.

Understanding different types of credit searches

When you apply for credit, lenders can run two types of searches:

  • Soft searches don’t appear on your credit file and don’t affect your score. These are used for eligibility checking or when you check your own credit.
  • Hard searches do appear on your file and can slightly reduce your score temporarily. These happen when you formally apply for credit.

Too many hard searches in a short period can make you look desperate for credit, so it’s worth being selective about applications.

Building and improving your credit score

  • Pay everything on time – Payment history is the biggest factor in your score. Even small missed payments can cause damage.
  • Keep credit utilisation low – Try not to use more than 30% of your available credit limits, even if you pay the full balance each month.
  • Don’t close old accounts – Length of credit history helps your score, so keep older credit cards open even if you don’t use them much.
  • Register to vote – Being on the electoral roll at your current address helps verify your identity and can improve your score.
  • Check for errors – Dispute any mistakes you find on your credit files. The agencies have to investigate and correct errors.
  • Be patient – Credit repair takes time. Most negative information stays on your file for six years, but its impact reduces over time.

When your score doesn’t tell the whole story

Credit scores are useful tools, but they don’t capture everything about your financial situation. Life happens – job losses, illness, relationship breakdowns – and these can temporarily affect your credit while you’re actually a responsible borrower.

At London Mutual Credit Union, we understand that people’s circumstances change. If your credit file shows past difficulties but your situation has improved, we’ll take that into account. We’re more interested in whether you can manage the loan you’re applying for today than punishing you for past problems.

This community-focused approach is why many of our members across Southwark, Lambeth, Westminster, and Camden choose us over high street banks that rely purely on automated decisions.

Moving forward with confidence

Understanding your credit score and file puts you in control of your financial options. Whether you’re planning a major purchase, looking to consolidate debts, or just want to understand where you stand, regular checking and gradual improvement will expand your choices over time.

Good to know

The contents of this article are intended for informational purposes only, and do not constitute financial advice. Always consult a qualified professional for independent advice if you are unsure about whether a financial product or strategy is suitable for you.

London Mutual Credit Union

Serving over 33,000 members across the London Boroughs of Southwark, Lambeth, Westminster and Camden, London Mutual is one of the UK's largest credit unions. Founded in 1982, London Mutual serves members across local government, the armed forces, healthcare and education.

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