The recent statistics from the Financial Conduct Authority (FCA) should serve as a wake-up call for the banking industry. In just the first half of 2025, financial services firms in the UK received a staggering 1.85 million complaints and paid out £283m in redress, a 20% increase on the figures from the previous six months. This data, confirmed by the FCA, underscores a growing trend of customer dissatisfaction within the banking sector.
The consistent high volume of complaints over the years does not seem to be decreasing anytime soon. This constant influx is placing a significant strain on banks’ ability to respond effectively. As the volume of complaints remains steady or even increases, the gap between customer expectations and what banks can deliver is becoming increasingly visible.
Complaints as a signal, not the cause
It is tempting to attribute this rise in complaints to external factors such as fraud. For instance, UK Finance reported losses amounting to £629.3m due to fraud in the first half of 2025 across 2.09 million cases. Naturally, disputes around reimbursement would follow.
Alongside this, there are ongoing remediation programmes, including those concerning motor finance, and increased scrutiny under Consumer Duty.
However, the root issue is not the complaints themselves. Instead, these complaints serve as a reflection of how effectively banks are operating and communicating with their customers. A complaint often surfaces when issues are resolved late or inconsistently, serving as the first formal instance where a breakdown in the customer-bank relationship becomes visible.
Where legacy processes break down
Many banks continue to rely heavily on manual processes for handling complaints. Cases often move across teams, systems, and formats, with crucial information buried in emails, call recordings, and documents that require individual review.
This not only causes delays before an investigation can even begin but also introduces substantial variation. Different handlers may interpret the same information differently, leading to inconsistent conclusions.
FCA data reveals that about 57% of complaints continue to be upheld. This suggests that many complaints are not anomalies or edge cases; they represent valid concerns that could have been addressed earlier in the customer journey.
For large banks operating across multiple product lines and jurisdictions, often on infrastructure that has evolved over decades, upholding consistency in complaint handling becomes a formidable challenge, especially as complaint volumes continue to rise.
Rising expectations from regulators
Regulatory expectations are also changing. The Consumer Duty now requires firms to demonstrate fair outcomes, supported by clear reasoning and consistent treatment of customers.
This standard is higher than what many existing processes were designed to meet. Resolving complaints within a timeframe is no longer sufficient. Firms must demonstrate the reasoning behind their decisions and ensure consistent treatment of similar cases.
Delivering this level of traceability using manual workflows alone is challenging, especially when decisions rely on fragmented data and individual judgement.
What changes with AI
The role of AI in complaint handling is often misunderstood. It is not about eliminating human involvement but about creating a consistent foundation for decision-making.
One of the immediate benefits of AI is its ability to structure unstructured data. Complaints often involve large amounts of narrative information. AI can process this quickly, extracting timelines, identifying relevant details, and presenting them in a standardised format.
This not only reduces the time spent gathering information but also allows investigators to focus on the substance of the case. It also shortens resolution timelines, directly improving the customer experience.
AI also brings consistency. By systematically applying policies and regulatory guidance, variation between similar cases can be reduced.
Furthermore, AI systems can process large volumes of complaints simultaneously, a crucial advantage during spikes driven by fraud or remediation programmes.
From resolution to insight
AI enables a broader shift in complaint handling. It allows banks to move beyond resolving individual cases to identifying patterns across them.
When data is analysed at scale, recurring issues become visible much earlier. Product design flaws, communication gaps, and operational weaknesses can be identified and addressed proactively.
This creates a feedback loop into the wider organisation. Complaints start to inform change rather than simply reflect it. Over time, this can reduce repeat issues and improve overall customer outcomes.
An operational issue, not a complaints issue
While complaint volumes are unlikely to fall in the near term and redress costs continue to rise, the underlying issue is the way complaints are handled, not the number of complaints.
Without significant changes in complaint handling processes, the figures reported by the FCA are likely to remain high, and banks will continue to pay the price.
João Pedro Almeida, Co-Founder of Noxus AI
Source: Retail Banker International
