We help UK owner-managed businesses put senior financial leadership in place and take the running of the business out of a few hard-pressed heads — so it runs more efficiently now, and holds its value when it matters most.
“Most good businesses run on the effort of a few people who hold everything in their heads. That works — until the day it has to work without them.”
Run better Cash, margin and forecasting under proper financial leadership — numbers that steer this year's decisions, not numbers that arrive a year after the decisions they should have informed.
Depend less The reasoning the business runs on — how it prices, decides, delivers — stops being private knowledge and becomes the way the place works.
Transfer ready A business that could be handed to a management team, the next generation, or an acquirer — because it stands on its own.
A business can perform well for years without anyone noticing that it runs on effort rather than structure. Orders arrive. Customers stay. The numbers look good — or good enough. The people who make it work simply work harder when something slips.
The cost is invisible until it isn't. Margin quietly erodes. Growth stalls at the capacity of the few people who hold it all together. And the value of the business — the real, transferable value — is far lower than the performance suggests, because so much of what makes it work cannot be handed to anyone else.
The numbers describe the past Management information arrives late, tells you what happened, and plays no part in the decisions that matter this month.
The process is a person How work gets done, priced and delivered lives in a handful of heads. When one of those people is away, things slow down or stop.
Decisions queue at one desk Most meaningful choices wait for the owner. Not because the team is unwilling — because the criteria have never been written down.
Growth means more strain, not more profit Every new customer adds work faster than it adds margin, because the operation scales with people rather than with structure.
Everything we build is measured against a single test: does the business run better without depending on any one person to make it so. Two disciplines serve that test — financial leadership and operational design.
Senior financial leadership at a fraction of the cost of a full-time hire. Not bookkeeping, and not a monthly report nobody reads — a finance function that steers the business: cash and working capital under control, margins understood at the level where they are made and lost, forecasts the owner can actually plan against.
You work with one CFO — not a roster. Rudi Prenzlin leads every engagement personally, and membership of CFO+, a network of experienced fractional finance leaders, puts the pattern recognition of that whole bench behind the one seat at your table.
An assay tests what a metal is actually made of — not what it is claimed to be. Assay-OS applies that discipline to a business: how it wins work, prices it, delivers it, decides. What the assay finds becomes a way of working the whole team can run — with none of it living only in someone's head.
Automation and AI come last, and only where they earn their place. The result is a business that is legible: to its own team first, and to anyone who may one day need to take it on.
The two disciplines work together: numbers that tell the truth, and an operation that can act on what they say.
We work alongside the owner and the team — not on them. The aim is to transfer capability into the business, not to make it dependent on another adviser. When the engagement ends, the structure stays. That is the point of it.
Nothing about the work is visible to customers, competitors or staff beyond those involved. Improvement should look like the business simply getting better at being itself.
A confidential, no-obligation discussion about the business, where it strains, and what you want it to become. No paperwork. No commitment.
We establish where effort is substituting for structure — in the finance function, in operations, in the decisions that queue at the owner's desk — and which gaps cost the most.
Financial leadership and the new way of working put in place in deliberate order — starting with the changes that free the most capacity. Done with your team, so the capability lands and stays.
A measured operating rhythm the team runs without us. Our involvement reduces by design. The structure — and the independence it buys — remains.
A business that runs on structure is worth more than one that runs on effort — to its owner every month, and to whoever comes next. The same work that improves margin and frees the owner's time is the work that makes a business genuinely transferable: to a management team, to the next generation, or in time to the right acquirer.
Most owners are years away from that conversation, and we never push toward it. But building to a transferable standard costs nothing extra — and it is the difference between a business that holds its value and one that quietly leaks it. When an owner does decide the time has come, a well-structured business gives them something rare: options, on their own terms.
Accountants, solicitors and advisers who work with owner-managed businesses see the pattern before anyone else: a good business, good numbers, and an owner carrying far more of it than the accounts suggest. If a client of yours fits that description, a quiet conversation may be useful — handled with the same discretion we extend to owners. Nothing moves without the client's knowledge and consent.
Experienced fractional CFOs who work — or want to work — to this standard are equally welcome to make contact.
Scalable Growth is led by Rudi Prenzlin, who brings more than three decades of international business, finance and investment experience: banking and private banking, investment work across multiple markets, and the CFO seat at several companies and groups. That experience includes preparing owner-managed businesses for transition first-hand — some of them too late. The lessons from those tend to be the more instructive.
That experience shaped a simple conviction: the qualities long-term investors look for in a business — capable management, durable advantages, consistent cash generation — are the same qualities that make a business a better place to work and a better asset to own. Building them is not a project for the year before a sale. It is how a good business should run.
A weekly note on finance, structure and owner-independence. For UK owner-managed businesses. Published as a LinkedIn newsletter.
All enquiries are treated in confidence. There is no commitment in making contact — only the possibility of a useful conversation. If you are not ready to share details, a brief note is enough to begin.
If you are wondering whether your business runs on structure or on effort — you likely already know the answer. The conversation is about what to do with it.