Across this series, we have mapped where AI adoption in financial services is taking hold and who it is leaving behind. This final article asks the harder commercial question: what is AI beginning to do to the customers your brand already has?

Financial services brands have, historically, benefited from a powerful structural advantage: inertia. Switching a bank account, moving a pension, or transferring an investment portfolio has always been possible in principle, but the friction involved has meant that most customers stay put far longer than rational self-interest would dictate. Customer retention in financial services has never needed to be earned in the way it has in, say, retail or media. It has largely been inherited.

That structural advantage is beginning to erode. The early signals in our March 2026 research, drawn from a nationally representative sample of 2,000 UK adults, point toward a shift in the conditions that have underpinned customer loyalty in the sector for decades. AI isn’t only changing how people find financial products. It is changing how willing they are to act on what they find.

The sector’s most engaged customers trust it least

One of the most consequential findings in this research is the relationship between AI adoption and trust in financial services brands. Almost 1 in 4 UK adults (24%) say they trust financial services brands less than brands in other sectors. Among those already using AI in their financial lives, that figure rises to 39%.

This is not the pattern financial services brands would want to see. The consumers most actively engaged with AI as a financial decision-making tool are the same consumers most likely to approach financial brands with scepticism. They are scrutinising brands before they commit, using AI to check for negative reviews and scandals, to verify legitimacy, to compare products across the market. And their default posture is one of distrust rather than loyalty.

| Almost 1 in 4 UK adults trust financial services brands less than brands in other sectors. Among current AI users, that rises to 39%.

The implication for financial services marketing is significant. The arrival of an engaged, digitally active consumer at your brand’s door is now a moment of heightened scrutiny, in which the consumer is looking for reasons to hesitate. Brands that understand this will invest differently in how they present themselves at the point of consideration.

AI is reading the small print your customers never did

One of the more quietly significant findings in this research concerns the terms and conditions of financial products. Thirteen per cent of UK adults say they have used AI to read and summarise the T&Cs of a financial product before signing up. Among AI users in financial services, that figure is 44%. Among Gen Z, it is 29%.

For decades, the terms and conditions of financial products have represented a form of practical obscurity. Legally disclosed, rarely read, and structured in ways that made meaningful comparison difficult for the average consumer. That obscurity is diminishing. AI is making the scrutiny of product terms accessible to a consumer who would previously have signed without reading, and that has direct implications for how financial products are structured, priced and communicated.

This is not a future scenario. It is happening now, among the youngest and most financially active cohorts in the market. The brands that get ahead of it, by writing terms that can withstand plain-language summary rather than ones that rely on their complexity for cover, are the ones that will build credibility with the consumers doing the scrutinising.

| 44% of AI users in financial services have used AI to read and summarise T&Cs before signing up. Among Gen Z, the figure is 29%.

Switching intent is real among those who matter most

The most commercially pressing finding in this research is about switching. Almost 1 in 4 UK adults (22%) say that if an AI tool told them they could save money by switching to a different financial provider, they would seriously consider doing so. Among Gen Z that rises to 34%. Among Millennials, 33%. And among current AI users in financial services 55%, say the same.

| 55% of current AI users in financial services say they would seriously consider switching providers if an AI tool recommended it.

For financial brands, the strategic question this raises is not whether switching will increase, but whether they understand which customers are at risk and why. The consumers most likely to act on an AI switching recommendation are also the most financially confident, the most digitally active, and often the most commercially valuable. Losing them to a competitor whose product looks marginally more favourable in an AI-generated comparison is a very different retention problem from the one the sector has historically faced.

The comparison site parallel

It is worth pausing to consider what happened to financial services customer acquisition when price comparison websites reached critical mass in the late 2000s. Brands that had built acquisition strategies around direct relationships and brand preference found themselves commoditised. Products were rearchitected around aggregator visibility. Margins in high-churn categories compressed. Some brands adapted; others spent years playing catch-up.

AI is not identical to price comparison, and it would be wrong to suggest the disruption will follow an identical pattern. But the structural dynamic is recognisable. Fifteen per cent of UK adults already believe AI is better than comparison websites at finding the right financial product. Among current AI users, that figure is 50%.

The brands that treated price comparison as a temporary problem, or dismissed it as relevant only to commodity products, were the ones most damaged by its rise. The lesson for AI is the same: understanding the shift while it is still forming, rather than after it has reshaped the market, is where competitive advantage lies.