Why Has My Credit Score Gone Down Suddenly? (2026)

You check your credit score out of idle curiosity — and it’s dropped 60 points since last month. No missed payments, no new debt, nothing changed. What happened? A sudden credit score drop is alarming, but it’s rarely mysterious: scores move for specific, identifiable reasons, and most of them are fixable. Here’s how to diagnose the drop, what each cause means, and exactly how to recover.

First: understand what you’re looking at

The UK has three main credit reference agencies — Experian, Equifax and TransUnion — and they don’t share one score. Each uses its own scale (Experian 0–999, Equifax 0–1,000, TransUnion 0–710), so a “drop” on one may not appear on others. Lenders also don’t see your score — they see your credit report (the underlying data) and apply their own scoring. The number is a guide; the report is the reality.

Check all three agencies’ reports free: Experian and Equifax offer free tiers, TransUnion data comes free via Credit Karma, and ClearScore provides Equifax data free. You’re entitled to your statutory reports, and checking them never harms your score — that’s a myth. The MoneyHelper credit guide explains the system impartially.

The usual suspects: why scores drop suddenly

1. High credit utilisation

The most common cause of sudden drops. Utilisation = balance ÷ credit limit. Spend £1,800 on a £2,000-limit card and you’re at 90% utilisation — even if you pay in full every month, the reported balance tanks your score. Lenders read high utilisation as financial stress. Fix: keep utilisation under 25% ideally (under 10% is excellent). Pay down before the statement date, not just the due date — it’s the reported balance that counts.

2. A hard search you forgot about

Every credit application (cards, loans, mortgages, car finance, even some mobile contracts) leaves a hard search. One is minor; several in a short period signals desperation to lenders and drops your score noticeably. Fix: space applications out — no more than one or two per six months — and use eligibility checkers (soft searches, no impact) before applying.

3. Closing an old account

Closing your oldest credit card shortens your credit history length and reduces total available credit — both hurt. That ancient card you never use is actually helping your score by ageing your file. Fix: generally keep old accounts open (use them occasionally for a small purchase to prevent closure for inactivity).

4. An error on your file

Surprisingly common: a default that isn’t yours, a satisfied debt still showing as outstanding, an old address linking you to someone else’s debts, or a payment marked late that was on time. Fix: dispute it with the agency — they’re legally obliged to investigate. Errors corrected, scores rebound. Check all three agencies, since errors often affect only one.

5. Changes in your circumstances

Moving house (especially without updating the electoral roll), leaving the electoral register, a new financial association (joint account with a partner who has poor credit), or reduced income can all shift your score. Fix: register to vote at your current address immediately — it’s one of the highest-impact actions available. Our guide to updating your address covers the admin that protects your file.

6. Missed or late payments (check carefully)

A single missed payment can drop a good score by 100+ points and linger for six years. Sometimes it’s not yours — a forgotten store card, a direct debit that failed after switching banks. Fix: set up direct debits for at least minimum payments on everything, and if a missed payment was the lender’s error, complain and demand correction.

What probably ISN’T the cause

Checking your own score (never affects it). Earning more or less (income isn’t on your credit file). Savings and investments (invisible to agencies). Being rejected for credit (the rejection isn’t recorded — only the search is). Your age, gender or ethnicity (not factors, and illegal to use). Understanding this stops you chasing the wrong fixes.

The recovery plan

Week 1: pull all three reports, identify the cause, dispute any errors. Month 1–3: pay down high-utilisation balances as part of a structured monthly budget, register on the electoral roll, set up direct debits. Month 3–6: let the fixes age — scores recover as positive data accumulates. Most utilisation-driven drops reverse within 1–3 months of the balance falling; missed payments take longer but their impact fades with each clean month.

Long-term builders: keep utilisation low permanently, never miss a payment (direct debits!), keep old accounts open, and space out applications. The fundamentals never change: borrow lightly, repay reliably, and let time do the compounding. The FCA’s consumer pages explain your rights when disputing errors.

Protecting your score long-term in London

London living creates specific credit risks worth managing proactively. Frequent moves between rentals can fragment your address history — update the electoral roll and all lenders within weeks of moving, every time. House-shares and joint tenancies sometimes create financial associations with housemates you barely know; check your file for unexpected associations and sever the ones that are wrong. And the capital’s high cost of living pushes utilisation up — a £3,000 balance on a £4,000 limit looks very different from the same balance on a £12,000 limit, so requesting limit increases (without spending more) is a legitimate utilisation-management tactic, provided the discipline holds.

Set a twice-yearly calendar reminder to review all three reports — spring and autumn, ten minutes each. You’re looking for errors, unfamiliar searches and accounts you don’t recognise. This tiny habit catches identity fraud early, keeps errors from compounding, and means you’ll never again wonder why your score moved — because you’ll have watched it the whole time.

Conclusion

A sudden credit score drop is almost always one of six things: high utilisation, clustered hard searches, a closed old account, a file error, changed circumstances, or a missed payment. Diagnose it by pulling all three credit reports (free, and checking never hurts), fix the specific cause, and give it 1–6 months — scores are designed to recover as positive behaviour accumulates. The file is the reality and the score is the shadow: keep the file clean, registered, and low-utilisation, and the number takes care of itself.

Frequently Asked Questions

How fast can my credit score recover?

Utilisation-driven drops often reverse within 1–3 months of balances falling. Errors, once corrected, can rebound quickly. Missed payments take longest — their impact fades gradually over the six years they remain visible.

Will checking my credit score lower it?

No — this is a persistent myth. Checking your own report is a “soft search” with zero impact. Only lender hard searches (from actual applications) affect your score.

Why do my three scores differ?

Each agency uses different data, different scales and different scoring models — and not all lenders report to all three agencies. Focus on the underlying reports rather than comparing numbers across agencies.

Does being on the electoral roll really matter?

Enormously — it’s one of the strongest identity-verification signals lenders use. Not being registered can cost dearly; registering at your current address is free and fast via gov.uk.

Should I pay to see my credit report?

No need — free options cover everything: Experian’s free tier, Credit Karma (TransUnion), ClearScore (Equifax). Paid services add monitoring features, but the core data is free by law.