Thousands of banking customers across the United Kingdom have been wrongly denied refunds after falling victim to sophisticated fraud schemes, according to newly released data from the Financial Ombudsman Service. The independent body, which resolves disputes between consumers and financial firms, has published its latest figures showing significant error rates in how major banks handle scam complaints.
Bank-Specific Rejection Rates Highlight Systemic Issues
The Financial Ombudsman Service data reveals concerning patterns in how different financial institutions have handled fraud complaints. Monzo was found to have wrongly rejected 34% of the 3,372 complaints it received, while NatWest made incorrect decisions in 33% of 1,972 cases. HSBC similarly wrongly rejected 32% of 2,535 complaints brought before the ombudsman.
These statistics represent only the cases that reached the Financial Ombudsman Service, suggesting the actual number of wrongly denied refunds could be substantially higher across the banking sector.
Bank Responses to the Ombudsman Findings
A spokesperson for Monzo addressed the findings by stating: "This data is historical and some of these cases relate to fraud that happened over two years ago. Since then, we have continued to invest in technology to stop fraud before it impacts our customers – and it's working. We prevented 2.9 times the value of fraud in 2025, compared to the year before."
HSBC provided a detailed response, with a spokesperson explaining: "We fully comply with our regulatory obligations around the mandatory reimbursement of scams. Last year, we refunded over 13,000 scam claims and prevented over £130 million being defrauded from our customers. Financial Ombudsman Service data reflects only the small proportion of cases that were referred to the ombudsman and does not capture the customers we successfully help each year through early intervention, reimbursement, and support."
The Mirror has contacted NatWest for comment regarding their position in the ombudsman's findings.
Understanding the Fraud Landscape
The most prevalent types of fraud complaints include authorised push payment scams, where criminals impersonate reputable businesses to deceive victims into transferring money directly. Other common complaints involve chip and pin fraud and various forms of identity theft that compromise financial security.
Alarming Financial Impact of Payment Fraud
According to the latest figures from UK Finance, criminals successfully stole £629.3 million through scams and payment fraud during the first half of 2025 alone. Authorised push payment fraud losses reached £257.5 million during this period, representing a 12% increase compared to the same timeframe in the previous year.
While the number of authorised push payment cases decreased by 8% to 110,747, the actual number of fraudulent payments increased by 4% to 226,306 compared with the first half of 2024. This suggests that while fewer cases are occurring, the individual incidents are becoming more financially damaging to victims.
Regulatory Changes and Reimbursement Rules
In October 2024, the Payment Systems Regulator introduced new mandatory authorised push payment scam reimbursement rules, replacing the previous voluntary code that governed how banks handled such cases. Under the current mandatory framework, there is an £85,000 reimbursement limit, though financial institutions retain the discretion to reimburse higher amounts in exceptional circumstances.
The regulations also include an optional excess of up to £100 that firms may apply in certain situations. Importantly, customers will not receive refunds if they are found to have been complicit in the fraud or demonstrated gross negligence in protecting their financial information and assets.
The Ongoing Challenge of Financial Fraud Protection
The discrepancy between bank-reported prevention statistics and the Financial Ombudsman Service findings highlights the ongoing challenges in balancing fraud prevention with fair customer treatment. While banks emphasize their technological investments and prevention successes, the ombudsman data reveals that legitimate victims continue to face unjustified barriers when seeking reimbursement for fraudulent transactions.
This situation underscores the importance of the Financial Ombudsman Service as an independent arbiter in financial disputes, particularly as fraud techniques evolve and become increasingly sophisticated. Consumers affected by banking fraud are encouraged to pursue complaints through proper channels if they believe their refund requests have been unfairly denied.
