📰 Originally published on SecurityElites — the canonical, fully-updated version of this article.
Have you or someone you know experienced bank or card fraud in the UK?
Yes — it happened to me Yes — someone I know Almost — I spotted something suspicious in time No — but I want to be prepared
How to Report Bank Fraud in the UK in 2026:- You have just received a bank alert for a payment you did not make. (Looking for the India guide or US guide? We have those too.) Or you have realised you were tricked into transferring money to someone posing as your solicitor. Or a fraudster has used your credit card details online. Here is what most UK fraud victims do not know: the rules changed significantly in October 2024. The Payment Systems Regulator introduced mandatory reimbursement for Authorised Push Payment fraud — meaning if you were tricked into sending money, your bank must now pay you back up to £85,000, even if the bank was not technically at fault. Add Section 75 of the Consumer Credit Act, chargeback rights, and the Financial Ombudsman Service — and the UK consumer protection framework is one of the strongest in the world. The problem is almost no one knows how to use it. This guide walks you through every step, every number, and every escalation path in the right order.
What This Guide Covers
The October 2024 PSR rule — mandatory reimbursement for APP fraud up to £85,000
Section 75 Consumer Credit Act — your strongest protection for credit card fraud
Step-by-step: bank complaint, Action Fraud, Financial Ombudsman — in the right order
Chargeback for debit cards and transactions under £100
What to do when your bank refuses your claim — the full escalation ladder
25 min read. Bookmark this now. If you have just been defrauded — do not read this from the beginning. Jump immediately to Step 1 (call your bank) and Step 2 (Action Fraud). Come back and read the full article once those calls are made. Speed matters for fund recovery. ### Contents 1. IMMEDIATE — Call Your Bank Fraud Line 2. Report to Action Fraud (0300 123 2040) 3. The October 2024 PSR Rule — APP Fraud Rights 4. Section 75 Consumer Credit Act 5. Chargeback — Debit Cards and Sub-£100 Transactions 6. Formal Written Complaint to Your Bank 7. Financial Ombudsman Service 8. Specific Steps by Fraud Type 9. Full Escalation Ladder 10. Documentation Checklist ## STEP 1 — Call Your Bank Fraud Line Immediately Call the number on the back of your card right now.
Every major UK bank has a 24/7 dedicated fraud line. Do not call the main branch number — ask specifically for the fraud or disputes team. Your bank can attempt to recall a Faster Payment in the short window before it is processed further, freeze your account to prevent additional transactions, and open a formal fraud case that starts the clock on their legal obligations to you.
FRAUD HELPLINE NUMBERS — MAJOR UK BANKSCopy
SAVE THESE IN YOUR PHONE NOW — all 24/7
Barclays : 0800 161 5153 (Freephone)
Lloyds Bank : 0800 756 9090 (Freephone)
Halifax : 0800 001 5020 (Freephone)
HSBC : 0800 085 1983 (Freephone)
NatWest : 0800 161 5162 (Freephone)
Royal Bank Scotland : 0800 161 5162 (Freephone)
Santander : 0800 313 4321 (Freephone)
Nationwide : 0800 030 4719 (Freephone)
Monzo : In-app chat 24/7
Starling Bank : In-app or 0207 930 4450
TSB : 0800 096 8669 (Freephone)
Metro Bank : 0345 08 08 500
What to say when you call:
“I am calling to report an unauthorised transaction.
I need to open a fraud case and block my account immediately.”
Write down immediately after the call:
- Fraud case reference number
- Name of agent spoken to
- Time and date of call
- Actions bank confirmed they took (freeze, recall attempt)
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UK Fraud Protection — Which Regime Covers Your Situation
PSR Oct 2024
APP Fraud via Faster Payments / CHAPS — up to £85,000
Mandatory bank reimbursement. You were tricked into sending the payment. Report promptly.
Section 75
Credit card — transactions £100 to £30,000 — full refund
Legal right under Consumer Credit Act 1974. Card company jointly liable with fraudulent seller.
Chargeback
Debit or credit cards, any amount — card network reversal
Visa/Mastercard voluntary scheme. Applies where Section 75 does not (under £100, debit cards).
FOS Escalation
Free if bank refuses — can order reimbursement + compensation
Financial Ombudsman Service. Use if bank gives final refusal or does not respond in 8 weeks.
UK fraud protection regimes. Match the right protection to your specific situation. PSR covers bank transfers where you were tricked (APP fraud). Section 75 covers credit card fraud above £100. Chargeback covers debit card fraud and credit card fraud under £100. The Financial Ombudsman is the backstop for all of them when your bank refuses. Understanding which regime applies to your situation is the difference between recovering your money and writing it off.
STEP 2 — Report to Action Fraud
0300 123 2040 — Action Fraud — Report now.
Action Fraud is the UK’s national fraud reporting centre, operated by the City of London Police and the National Fraud Intelligence Bureau (NFIB). Reporting creates an official crime record and gives you a National Fraud and Cybercrime Reporting Centre (NFRC) crime reference number — a document your bank and the Financial Ombudsman can reference. This reference number significantly strengthens any subsequent dispute with your bank.
HOW TO REPORT TO ACTION FRAUDCopy
📖 Read the complete guide on SecurityElites
This article continues with deeper technical detail, screenshots, code samples, and an interactive lab walk-through. Read the full article on SecurityElites →
This article was originally written and published by the SecurityElites team. For more cybersecurity tutorials, ethical hacking guides, and CTF walk-throughs, visit SecurityElites.
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