Personal Finance
How to Improve Your UK Credit Score
Your credit score decides whether you get a mortgage, what rate your car finance is priced at, and sometimes even whether you can rent a flat. Here is how to move it in the right direction - based on what the UK agencies actually measure, not the myths floating around the internet.
The three UK agencies
The UK has three main credit reference agencies: Experian, Equifax, and TransUnion. Each holds a separate file on you, each uses a slightly different scoring scale, and each gets slightly different data from lenders. You can have a 950 with Experian and a 720 with Equifax on the same day - which is why checking all three matters. You can see your files free through Credit Karma (TransUnion), ClearScore (Equifax), and Experian directly.
Scoring ranges
- Experian: 0-999 (961+ excellent)
- Equifax: 0-1000 (811+ excellent)
- TransUnion: 0-710 (628+ excellent)
What actually affects your score
Lenders guard their exact algorithms, but the weighting breaks down roughly like this:
Have you paid on time? Missed or late payments hurt the most - and linger for up to six years.
What share of your available credit are you using? Under 30% is good; under 10% is excellent.
Older accounts help. Never close your oldest credit card without thinking.
A healthy blend of revolving (cards) and instalment (loans) credit looks more mature.
Too many hard searches in a short window look desperate. Spread applications out.
Seven actions that genuinely move the needle
Register on the electoral roll
Free, fast, and one of the biggest single boosts available. Lenders use it to verify your identity and address. If you live abroad or cannot register, provide proof via each agency directly.
Pay every bill on time - including the small ones
One missed mobile phone bill can shave 80 points. Set direct debits for every recurring payment, even if it is just the minimum. Missed payments stay on file for six years.
Get utilisation under 30%, ideally under 10%
If your card has a £2,000 limit, keep the balance below £600 on the statement date. If you can, pay part of the balance before the statement generates - the balance reported to agencies is the one they see, not your spend.
Keep old accounts open
The average age of your accounts matters. Closing a five-year-old credit card you never use can drop your score. Use it for one small purchase every six months and pay it off.
Use a credit-builder card if your file is thin
Cards like Capital One Classic, Tesco Foundation, or Aqua Classic are designed for people rebuilding. Spend a small amount each month, pay in full. Six months transforms a thin file.
Check and correct errors on your file
Incorrect addresses, accounts that do not belong to you, old defaults that should have dropped off - all common and all fixable. Each agency has a dispute process; use it.
Use rent reporting services
Canopy and Credit Ladder report your rent payments to Experian. If you pay rent reliably for years, it should count - now it can.
What NOT to do
- Do not apply for multiple products in the same week. Each hard search dings you. Use eligibility checkers (soft searches) to shortlist first.
- Do not max out cards even if you clear them. The statement balance is what agencies see. A card at 95% used looks bad even if you pay it off the next day.
- Do not close every old account. You are shortening your credit history and raising your utilisation ratio in one move.
- Do not pay for paid-for credit repair services that promise to remove accurate negative information. They cannot; it is a scam dressed up as a service.
- Do not ignore a county court judgment (CCJ). Pay within 30 days and it gets marked "satisfied" and disappears entirely; pay later and it sits on your file for six years.
Bottom line
Credit scores respond to boring, consistent behaviour over 12-24 months. There is no overnight fix - but the boring stuff works. Register, automate payments, keep utilisation low, do not apply for things you do not need, and check your file twice a year.