When the UK government recently highlighted a new wave of Nigerian investment into Britain, much of the public attention naturally focused on the numbers: capital, expansion, jobs, and international ambition.

Among the firms mentioned was LemFi, which announced plans to invest £100 million over the next five years as it deepens its UK footprint and designates London as its global headquarters. The announcement placed the company within a broader story about the growing international reach of Nigerian financial and technology firms.

But headlines about expansion often leave out a more consequential question: what actually makes growth in cross-border payments sustainable?

Working within cross-border payments from a strategic finance perspective means not focusing on the public-facing excitement of growth, but also on the financial structures and operational discipline that make scale possible in the first place, according to Mayowa Olaniyan, a financial expert with LemFi.

“At a certain point, growth alone stops being the real story,” Olaniyan told The Guardian. “The real story becomes whether the systems beneath that growth are strong enough to sustain trust.”

That shift in thinking is increasingly relevant as African-founded financial platforms move into more globally visible and more tightly regulated markets. For years, much of the fintech conversation has centered on speed, disruption, and product innovation. Those things still matter. But Olaniyan believes the next phase of cross-border payments will be shaped by something more demanding: institutional credibility.

“There is a difference between building something people can use and building something people can consistently rely on,” he said. “And once you start expanding across markets, that difference becomes very clear.”

For him, the significance of the current moment lies not just in what it says about African fintech ambition, but in what it requires from the sector behind the scenes. As firms grow beyond startup environments and into more complex operating realities, the work becomes less about momentum and more about structure, less about promise and more about performance.

That is particularly true in cross-border payments, where the customer experience can appear deceptively simple. A transaction may look instant on the surface, but behind it sits a far more demanding system of financial coordination: liquidity planning, reconciliation, settlement discipline, internal controls, exception management, and the ability to detect and respond to risk before it compounds.

“One of the things people often underestimate is how much discipline is required to make simplicity look effortless,” Olaniyan said. “In payments, the smoother the customer experience, the more robust the underlying financial processes usually have to be.”

That perspective helps explain why he places so much emphasis on trust—a word that is often used loosely in fintech, but which he treats as something far more concrete.

“Trust in this space is not abstract,” he said. “It is not a slogan. It shows up in whether systems behave consistently, whether financial decisions are grounded, and whether operations remain coherent as complexity increases.”

That distinction matters in a sector where reliability is not simply a matter of convenience. Cross-border payment systems often serve people making urgent or consequential financial decisions: workers sending remittances home, families supporting relatives, and businesses managing obligations across borders. In that context, trust is not just reputational. It is functional.

“When people move money across borders, they are often not doing something casual,” he said. “There is usually a real need behind that transaction. So from an operational and financial standpoint, consistency matters a great deal.”

As more firms in the sector expand internationally, Olaniyan believes one of the biggest tests will be whether they can grow without allowing complexity to outpace discipline. Scale, in his view, does not automatically create maturity. If anything, it tends to expose where maturity is missing.

“Growth can hide weaknesses for a while, especially when a company is moving quickly,” he said. “But expansion has a way of revealing whether your controls, reporting logic, and financial structure are actually keeping up with the business.”

That is one reason he sees finance as more than a back-office function in the payments ecosystem. At its best, he argues, finance helps shape whether a company can make sound decisions under pressure, absorb operational complexity, and remain stable as it grows.

“Finance should not only tell you what happened after the fact,” he said. “It should help you understand whether the business is building in a way that remains coherent over time.”

That kind of thinking points to a broader shift taking place across fintech more generally. In Olaniyan’s view, the industry is gradually moving away from a phase defined mainly by disruption and toward one defined by resilience. Innovation will remain essential, particularly in markets where legacy financial systems have underserved large populations. But he believes the firms that endure will be the ones that can convert innovation into dependable systems rather than temporary momentum.

“The next phase will reward durability,” he said. “Not just who can move fast, but who can build in a way that remains stable, credible, and trusted under real operating conditions.”

That lesson may be especially important for African and diaspora-focused financial platforms, many of which are now navigating a more international stage. The opportunity is clear: the demand for accessible, efficient, and responsive financial services continues to grow. But opportunity alone, Olaniyan suggests, is not enough.

“There is already talent. There is already innovation. There is already market demand,” he said. “The bigger question now is whether firms are building the internal strength to match the scale of the opportunity in front of them.”

That, ultimately, is what makes this current moment in cross-border finance so important. The real story is not simply that African fintech is expanding internationally. It is that the sector is increasingly being asked to prove something deeper: that it can build institutions worthy of the scale it is beginning to command.

For Mayowa Olaniyan, that is where the most meaningful work lies, not in the headline itself, but in the financial discipline, operational clarity, and institutional trust that must exist beneath it.

And if the next chapter of cross-border payments is going to be defined by more than growth, it will likely be because more professionals in the space are asking the same question: what does it take to build something that can truly hold?