Fluenteers, welcome back — and a special salute to the Fluent Few, our inner circle of long-term compounders.
Today, we’re pulling back the curtain on a £420M market cap hidden gem sitting quietly in the heart of the United Kingdom, a company the market hasn’t woken up to yet.
While most investors are busy chasing headlines, we’re going deeper, uncovering what others overlook. By the end of this piece, you’ll know exactly why this business stands apart… and why it won’t stay undiscovered for long.
This isn’t surface-level research, it’s an inside look reserved for those who think in decades, not days.
Thank you for being here.
Happy compounding!
Table Of Contents
Corporate Analysis
Business Overview
Revenue Breakdown
Executive Leadership
CEO Experience
Employee Satisfaction Ratings
Management Value Creation
Competitive and Sustainable Advantages (Economic Moat)
Industry Analysis
Industry Growth Prospects
Competitive Benchmarking
Risk Assessment
Financial Stability
Asset Evaluation
Liability Assessment
Capital Structure
Expense Analysis
Capital Efficiency Review
Profitability Assessment
Profitability, Sustainability, and Margins
Cash Flow Analysis
Growth Projections & Expect Annual Return
Value Proposition
Dividend Analysis
Share Repurchase Programs
Debt Reduction Strategies
Quality Rating & Checklist
Valuation Assessment
1. Corporate Analysis
1.1 Business Overview
In 1999, Louis Tancred Hall founded Cerillion Plc. Louis Hall led a management buyout in 1999 of the telecoms/billing product division from Logica to form Cerillion. Not long after, in 2016, Louis Tancred Hall brought Cerillion Plc to the broader market via an IPO.
Cerillion Plc provides software for billing, charging, and customer relationship management (CRM) to its customers. Cerillion Plc primarily operates in the telecommunications sector. This means that Cerillion Plc offers its products solely to other companies, making it a B2B business.
Cerillion Plc offers Software as a Service (SaaS) options to its customers, complemented by professional services.
Their SaaS segment contains:
Managed Service (hosted/operated BSS/OSS).
Cerillion Skyline subscription (SaaS).
Support & maintenance contracts.
Third-party hosting/hardware that’s billed on a recurring, pass-through basis.
Their Professional Services segment contains:
Implementation & integration projects for new deployments.
Configuration/customization, interfaces & data migration, testing, and go-live support.
Training & consultancy, as well as ongoing account development/enhancements for existing customers.
Here’s a clear overview of Cerillion's product suite.
At first glance, this diagram may appear to be filled with technical jargon, and honestly, it did to me, too.
However, once you break it down, it highlights one of Cerillion’s biggest strengths: once the company gains a foothold with a single product, it can easily expand its presence within that customer.
Cerillion’s product suite is highly modular and interconnected. Each component, from CRM Plus and Revenue Manager to Service Manager and Network Inventory, is designed to integrate seamlessly with the others. This means that after a customer adopts one system, adding new Cerillion modules doesn’t require a complex rebuild.
Instead, it enhances and extends the existing setup, multiplying the value the customer gets from the platform.
Every product adds real, operational value. Managing inventory, coordinating workforce operations, handling billing and taxation, automating trouble tickets, or even streamlining customer communications through email and chat integration. These are critical but notoriously painful areas for telecom and enterprise companies to manage efficiently.
It takes on the operational burden by offering a unified, end-to-end system. Cerillion enables customers to focus on their core business. At the same time, the platform handles the complex, interconnected backend processes that most organizations struggle to keep running smoothly.
1.2 Cerillion Plc Revenue Breakdown
*note: The currencies will be converted into dollars; Cerillion reports in pounds. But, to avoid any misunderstanding, I will refer to their numbers in dollars.
Let us first break down where Cerillion generates revenue globally. As many of you know, I prefer to see companies selling their products or services globally.
This mitigates the risks of headwinds when a company is solely selling in a country, such as the UK, that is facing an economic slowdown or other headwinds, resulting in a direct and significant impact on its revenues. The companies that spread globally will be able to withstand this headwind, as different countries are keeping up, making a country that lags less significant.
Cerillion is spread around the globe; they tick our box here.
Cerillion currently has roughly 75 customer installations across approximately 45 countries. We’re seeing Canada, the United States, Australia, the Netherlands, Belgium, Germany, Spain, Norway, and numerous other countries utilizing Cerillion’s products and services.
All fun and games, as Cerillion is selling its products and services globally, but how well spread are they? Looking at the revenue coming from what part of the world?
This is a crucial follow-up question to ask.
If a company is selling globally, but most of its revenue, like 90%, is coming from one country, there’s still limited diversification.
Most of Cerillion's revenue comes from the UK & Europe. This chart is messy, and I must agree with you on this point. America's revenue is all over the place, Asia Pacific's revenue is all over the place, and MEA's revenue is all over the place as well.
The UK & Europe are showing significant year-over-year growth, while the other segments, although they're up if we look over nine years, fluctuate in revenue, showing a highly modest trend. This causes the percentage of contribution to total revenue to fluctuate significantly.
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We’re clearly seeing that the UK & Europe have shown significant year-over-year growth, while the other segments, while growing, have shown considerable volatility.
Now, back to my argument on global diversification. Does Cerillion tick our boxes here? Yes, they do. Understandably, a UK-based company is showing great success in the UK and European countries.
Proximity and familiarity. The company already has a strong understanding of the UK market, including customer preferences, regulations, business culture, and distribution channels. Expanding into Europe is often easier because many cultural and consumer behavior patterns are more similar to those in Europe compared to Asia, Africa, or the Americas.
Regulatory alignment. The UK and EU share many regulatory frameworks (even post-Brexit, many standards are still aligned or comparable). This reduces the friction of adapting products and services to meet local laws and certifications.
Market entry barriers. Entering non-European markets often requires local partnerships, language adaptations, compliance with very different regulations, and sometimes cultural adjustments to the product itself.
Brand recognition and trust. A UK brand naturally gains more recognition at home, which spills over into nearby countries. Trust is more complex to build in faraway markets where consumers may not be familiar with UK brands.
These are just a few of the many reasons I can think of that explain Cerillion's success in the UK & Europe while other segments lag.
What we should be cheering on is the fact that Cerillion is getting its foot in the door of companies outside of the UK & Europe. Some partnerships and deals might fail, but this provides Cerillion with the necessary feedback to improve them.
Another beautiful part of Cerillion is that a significant portion of its revenues is recurring, stemming from its sticky product suite.
From what companies is this revenue coming from? Cerillion has a diverse portfolio of companies with which it partners.
An item worth mentioning is that 98% of Cerillion’s revenue comes from existing customers, and 2% comes from new customers (according to their H1 2025 results). There are both positives and negatives associated with this statistic.
A 98% contribution from existing customers suggests Cerillion’s clients are loyal and continue to renew or expand their contracts. This implies high customer satisfaction, strong product stickiness, and long-term recurring revenue. Such a ratio is standard in software or telecom billing companies (Cerillion’s sector) where revenue often comes from long-term service contracts, licenses, or maintenance agreements. It indicates a stable, predictable income stream.
Cerillion has established deep relationships with its existing clients, a significant portion of whom are major telecom providers. This can be challenging for competitors to disrupt.
The downside to this all?
Only 2% of new customers indicate that Cerillion isn’t acquiring many new clients, something we would love to see happen. If this trend continues, this could indicate a slower market expansion or challenges in winning new business.
Don’t be fooled, though. Cerillion still has a solid pipeline of potential new customers, as shown below.
Cerillion has a healthy pipeline, providing us with greater predictability of future operational cash flows that may come into the company. We love to see this.
I’ve been rambling on for too long; let’s go over management!
2. Executive Leadership
2.1 CEO Experience
Louis Hall has been the driving force behind Cerillion since its inception in 1999, when he led a management buyout of the telecoms and billing product division from Logica. Before founding Cerillion, he gained extensive experience at Logica, holding various product, sales, and management positions.
At the time, Logica was an FTSE 100-listed UK software house (later acquired by a Canadian conglomerate). Its business model was consultancy-driven mainly, delivering large-scale bespoke IT systems for industries such as defence, financial services, the Hong Kong Stock Exchange, and major transport networks like the London Underground and San Francisco’s BART.
Within Logica, Hall worked on the emerging telecoms products division, which originated from a major BT billing project in the 1980s. As GSM mobile networks began to spread globally, his team successfully adapted this expertise into scalable billing and customer management systems for new operators. This foresight positioned the unit as a leader in telecoms software at a time when few true “product” businesses existed in IT.
When Logica’s board decided it did not want to pursue a product strategy, Hall spearheaded the spin-out, securing bank debt to fund the management buyout and later raising private equity during the height of the dot-com boom. It was a bold and risky move that laid the foundations for Cerillion.
Since then, Hall has managed Cerillion for over two decades, steering it through the dot-com crash, private equity ownership, and ultimately to a successful IPO in 2016. Under his leadership, Cerillion has evolved into a well-established, profitable, and internationally recognized provider of BSS/OSS software.
Whether one views his career as defined by steady management or by entrepreneurial risk-taking, what is clear is that Louis Hall has Cerillion embedded in his DNA. His long-term vision has been instrumental in shaping the company’s trajectory.
The beauty of it all is that Louis Hall has ~30%, being the number one shareholder of Cerillion.
Beautiful!
2.2 Employee Satisfaction Ratings
Cerillion currently has approximately 365 staff members, comprising 120 employees in the UK, 215 in India, and 30 in Bulgaria.
You all know I’m 100% transparent, and this is especially important here. I have found a handful of employee reviews, but I was unable to verify them. Therefore, take the following with a grain of salt and exercise extra diligence here.
I’ve used Glassdoor, Comparably, LinkedIn, Indeed, and several other review sites, and summarized the scores below.
Again, I was not able to verify these reviews.
Some positive reviews boiled down to:
Good work–life balance & supportive culture
Reviews, especially from the India office, often mention a good work–life balance, flexible hours, and a friendly environment.
On Glassdoor, comments like “great atmosphere and friendly coworkers” are common.Strong teamwork and collegiality
Many employees highlight that colleagues are helpful and there’s genuine teamwork and camaraderie. Internal testimonials (on Cerillion’s own careers site) mention trust, responsibility, and growth opportunities.Training and development opportunities (especially in the UK HQ)
Employees describe opportunities to take on responsibility and advance. Cerillion runs a Graduate Programme and offers increasing benefits like extra holiday days with tenure.Global exposure & project variety
Work tends to be busy and varied, involving international clients, which can be both challenging and rewarding.
Negative reviews boiled down to:
Below-average pay and limited raises
Several reviewers note that the pay is not competitive compared to similar companies, and raises are often small or infrequent, tied only to promotions.Management style & rigidity
Some (former) employees describe upper management as somewhat rigid, slow to adapt strategy, or overly top-down.
One quote:
“The culture and strategy is dictated by a few executives… inability to properly address current market conditions with their go-to-market strategy.”
Limited technological innovation
A few reviews mention working with older technologies or a lack of exposure to newer tools, especially in the India offices.Inconsistent policies/communication
Some complaints have been raised about changes to internal policies or their unclear communication.
I do, however, love to mention that 92% of the reviews I’ve read were talking highly about Cerillion and working at Cerillion.
Again, most of the reviews I summarized could not be verified. Therefore, be cautious with this part of the investment case.
Now we have a better understanding of management and the culture at Cerillion.
Is management creating value for the company and its shareholders, though?
2.3 Management Value Creation
I want to know in this part how effectively management is using shareholders' money and equity to generate returns, and how much these returns are.
Simple metrics to use are Return on Equity (ROE) and Return on Invested Capital (ROIC)
There’s been a significant improvement in both the ROE and ROIC of Cerillion. In 2015, the ROE was 21.44% and the ROIC was 29.95%. These types of returns are already superb. We observed both the ROE and ROIC decline significantly in the following years. I dove a bit deeper into Cerillion’s financial statements and found the following explanation for this drop. This also explains the more recent drop in ROE and ROIC since 2023.
Cerillion has been experiencing significant growth and has invested substantial amounts in infrastructure, software development, and staff, among other areas. That means the amount of invested capital rises. Since the denominator (the invested capital) sharply outgrew the numerator (profit), they scored lower in terms of capital efficiency.
With Cerillion, contracts are signed, but revenue is recognized over time (deferred revenue). Lag in returns can depress these short-term ratios.
The same is going on right now. Therefore, their ROIC and ROE have dropped significantly.
However, their returns are still excellent.
Therefore, management is indeed creating value for the company and its shareholders here. It ticks our box.
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