The UK mortgage market has always been defined by its resilience. As we move deeper into 2026, lenders continue to navigate shifting demand patterns, affordability constraints, and persistent regulatory change.
According to the latest joint Financial Conduct Authority (FCA) and Prudential Regulation Authority (PRA) MLAR data for Q3 2025, the outstanding value of residential mortgage loans has climbed modestly, with gross advances surging to their highest quarterly level since 2020 at over £80bn. Yet beneath these headline figures lies a more complex operational reality – one that demands a fundamental reassessment of how lenders deploy technology.
In our inaugural Fignum Mortgage Tech Pulse report, we spoke with senior leaders across more than 40 UK mortgage lenders. The findings reveal a sector aligned on the need for change but increasingly constrained by legacy systems, margin pressures, and the sheer pace of regulatory intervention. For many firms, the balance has definitively tipped: the cost of maintaining the status quo is now viewed as greater than the disruption associated with core technology transformation.
Historically, technology investment in the mortgage sector has been episodic and siloed. Lenders have focused on adding layers of digitisation to well-defined stages of the process, such as origination or underwriting, often in isolation. While this vertical approach has yielded incremental gains in capacity and decisioning speed, it is no longer sufficient.
The modern mortgage journey requires a horizontal mindset. Data, decisions, and customer experiences must travel seamlessly across organisational and system boundaries – from the initial Decision in Principle (DiP) through to post-completion servicing. Our research indicates that while origination performance has improved markedly across the market, post-contract servicing continues to lag.
This disparity is particularly acute given the current economic climate. With a substantial cohort of borrowers reaching the end of two- and five-year fixed-rate deals, product transfers and internal refinancing have remained structurally elevated. Servicing efficiency increasingly determines retention, lifetime value and, crucially, Consumer Duty outcomes. Lenders relying on workarounds or manual oversight to manage post-completion changes are driving their cost-to-serve higher and making consistent outcome monitoring harder to evidence.
Across all peer groups – from large mainstream banks to specialist lenders and regional building societies – there is clear evidence of ongoing or imminent technology change programmes. However, the scale and ambition of these initiatives vary significantly.
Specialist lenders, unencumbered by legacy estates and focused on niche markets, are leading the charge in many areas. They report the highest satisfaction with their technology’s alignment to business strategy and score strongly on early-stage decisioning platforms. Conversely, regional building societies face constraints in front-end capability, likely driven by reduced investment capacity and older platforms.
Yet, regardless of institution size, the central challenge remains execution. Delivering core technology change while maintaining business-as-usual operations is complex and high-risk. Long-term commercial arrangements with system suppliers are frequently cited as limiting architectural flexibility precisely when adaptability is becoming strategically critical. Systems today must deliver agility, robustness and affordability, but the very nature of the supplier partnership is often the defining factor in success.
The regulatory landscape itself has shifted materially. The FCA’s Mortgage Rule Review, changes to stress-testing expectations and the consumer-support commitments embedded in the Mortgage Charter have forced lenders to adapt rapidly. The need for near real-time management information, clearer auditability of decisions, and stronger evidence of outcome monitoring is exerting growing pressure on existing architecture.
Risk management is moving away from an episodic, retrospective model towards continuous risk surveillance. Legacy platforms were simply not designed to support this level of granular, real-time oversight. When combined with tight net interest margins that increase sensitivity to operational inefficiency, the imperative for robust, agile technology becomes undeniable.
Interestingly, the much-discussed impact of artificial intelligence remains nascent. The phrase “fast follower” was used frequently by participants, reflecting a cautious approach to AI adoption. While automation is welcomed where it enhances consistency and oversight – such as in fraud detection or document verification – delegating core credit decisioning to AI is approached with significant trepidation.
As we look ahead, the strategic priority for lenders is clear. It is no longer just about scaling capacity; it is about the ability to respond quickly to changing market, regulatory and customer demands. Delivering faster, more consistent decisioning is critical to protecting margin and reputation.
The findings of the Pulse report underscore that technology itself is rarely the primary limitation. Preparedness for future innovation correlates more strongly with architectural flexibility than institutional size. For mortgage brokers and lenders alike, the message is unequivocal: execution discipline, strategic alignment and a commitment to continuous, horizontal integration will determine which firms thrive in the years to come.
Technology is now a way of life in financial services. Those who recognise that the cost of standing still exceeds the cost of change will be best positioned to serve the evolving needs of the UK mortgage market.
Steve Carruthers is growth director at Fignum