How to improve your credit score
Ten concrete actions ordered by speed and impact — from fixing errors and registering to vote, to managing utilisation and building a thin file.
10 min read →For new UK residents, young adults, or anyone with no credit history. What actually works, what to avoid, and realistic timelines.
~5 min read • Cash Train editorial team
When you apply for credit in the UK, lenders check your record with one or more of the three credit reference agencies (CRAs): Experian, Equifax, and TransUnion. They are looking for evidence that you have borrowed money and paid it back reliably.
If you have never borrowed — or only recently arrived in the UK where your overseas history is invisible to UK CRAs — there is simply nothing for lenders to assess. This is called a "thin file", and most mainstream lenders will decline you automatically, not because you are risky, but because their systems cannot score you.
The same problem affects young adults (typically 18–22), people who have only ever used cash, and anyone who has avoided credit on principle. The solution is to create a short, clean credit history deliberately.
Credit-builder cards (sometimes called bad-credit credit cards) are designed for people with thin or damaged files. Typical limits are £200–£500 and APRs are high — often 35–60% representative APR. That sounds alarming, but if you use the card for one small recurring purchase each month (a streaming subscription, your phone bill) and pay the balance in full by direct debit, you pay zero interest. After 6–12 months of consistent on-time payments, you have a provable track record.
A secured card requires a cash deposit — typically £49–£200 — which becomes your credit limit. Because the lender holds the deposit as collateral, approval rates are higher and there is less reliance on credit history. Your deposit is held separately and returned when you close the account or upgrade to an unsecured product. The card works exactly like a normal credit card day-to-day and reports your payments to the CRAs.
A credit-builder loan works in reverse from a normal loan. You agree to pay a fixed amount each month; the lender holds the funds in a ring-fenced account; at the end of the term, you receive the total (minus fees or interest). The monthly payments are reported to the CRAs as loan repayments, building your history. Some credit unions and fintechs offer these at low cost. Under the Consumer Credit Act 1974, the full cost must be disclosed to you as an APR before you commit.
By default, your rent payments are not reported to CRAs — so years of reliable tenancy leave no trace on your file. Rent reporting services like CreditLadder and Canopy send your rent payment data directly to Experian and/or Equifax. If you already pay rent on time, this is the lowest-effort way to add a positive payment history to your file, often within 4–8 weeks of signing up.
Layla graduates and wants to rent a flat. The letting agent requires a credit check. She has no credit file at all.
Total cost: £0 (paid in full every month, no interest charged). Time invested: ~2 hours to set up.
Marcus has an excellent credit history in Brazil, but UK lenders cannot see overseas records. He is starting from zero in the UK.
Total cost: £150 deposit (returned), £0 interest on the secured card, Loqbox fees vary by product tier. Timeline: 12 months to a mainstream credit product.
Companies that charge to "fix" or "rebuild" your credit have no powers that you do not already have yourself. You can dispute errors, raise a notice of correction, and request a statutory credit report — all for free, directly with the CRAs. Charging for these services is not illegal, but paying for them is unnecessary.
Every full credit application leaves a hard search footprint visible to other lenders for up to two years. Applying to five lenders in one week signals financial distress regardless of your actual situation. Use soft-search eligibility checkers before applying, and apply to one product at a time.
Credit history length is a factor in your score. Closing an old account — even a dormant store card — shortens your history and removes available credit, which can push your utilisation ratio up. Keep old accounts open with a small automatic charge to keep them active.
Some apps claim to boost your score by adding you as an authorised user on another person's account (known as piggybacking). This practice sits in a grey area, and lenders are aware of it. Building genuine history is slower but durable — borrowed history can be flagged during manual underwriting.
If you are starting from scratch today, this is the recommended order of actions:
| Action | Cost | Timeline |
|---|---|---|
| Register to vote at your current address | Free | 2–4 weeks |
| Check your credit report at all three CRAs | Free | Immediate |
| Sign up to a rent reporting service (if renting) | Free | 4–8 weeks |
| Apply for one credit-builder card | Free (no annual fee) | 3–6 months to build history |
| Set up direct debit to pay card in full monthly | Free | Ongoing |
| Keep utilisation below 30% of your card limit | Free | Next statement |
| Consider a credit-builder loan if income is stable | Low fee / varies | 6–12 months |
Most UK credit products (credit cards, bank loans, credit-builder products) are regulated by the Financial Conduct Authority (FCA) and governed by the Consumer Credit Act 1974 — meaning the lender must provide a SECCI form before you commit, with the representative APR, total repayable, and a 14-day cooling-off right. You can verify FCA-authorised lenders at register.fca.org.uk.
Cash Train is an unregulated lender. Our loans are not governed by the CCA 1974, but we provide equivalent protections contractually: a pre-contract cost summary, a 14-day withdrawal right, and the right to repay early at any time without penalty.
Apply online today and get a fast decision. Fixed monthly payments, no hidden fees.
Apply now →Warning: Late repayment can cause you serious money problems. For help, go to moneyhelper.org.uk