The £10M Problem
The short answer: scaling a business from £1M to £10M usually stalls somewhere between £3M and £8M, and more often than not the cause isn’t sales, hiring or the market. It’s a finance function that was built for a startup and can’t take the business where it wants to go.
The short version
- At £1M, a bookkeeper, a spreadsheet and a founder checking the bank balance is enough. At £5M, decisions are bigger, costs are hidden in working capital, and one bad quarter can be existential.
- Founders typically react in one of three wrong ways: keep doing what worked at £1M, hire a bookkeeper and assume it’s solved, or hire a full-time finance director too early.
- Businesses that get through to £10M make three shifts: from reactive to proactive finance, from owner-managed to investor-ready, and from busy to profitable.
- Growth without operational discipline can leave a business bigger and less profitable at the same time.
Crossing £1M in revenue is a triumph. Reaching £10M is a transformation.
I’ve spent a decade as a fractional CFO watching founders run into the same wall somewhere between £3M and £8M. They’ve built a real business. Sales are growing. Customers love them. The team is expanding. And then — quietly, often invisibly at first — momentum starts to drag.
The instinct is to assume it’s a sales problem, or a hiring problem, or a market problem. Sometimes it is. But more often, in my experience, it’s something founders rarely diagnose themselves: their finance function was built for a startup, and it can’t take them where they want to go.
This is the £10M problem.
What breaks when you’re scaling a business past £3M?
When a business is doing £1M, the finance function can be one bookkeeper, a spreadsheet, and a founder who checks the bank balance on a Sunday evening. It’s enough. The decisions are small, the costs are visible, and the margin for error is forgiving.
At £5M, none of that is true anymore.
The decisions are bigger — whether to take on a new product line, whether to hire ahead of revenue, whether to open a second office, whether to accept a contract that doubles the headcount but halves the margin. The costs are no longer visible; they’re hidden in working capital, in stock, in WIP, in the time it takes to invoice a client and the time it takes them to pay. And the margin for error is gone. One bad quarter at this stage isn’t an inconvenience. It’s existential.
Founders at this stage typically have one of three reactions, and all three are wrong:
The first is to keep doing what worked at £1M. Check the bank balance. Trust the gut. Push harder. This works right up until the moment it doesn’t, which is usually when a supplier asks for a credit reference and discovers no one in the business can produce one.
The second is to hire a bookkeeper or junior accountant and assume the problem is solved. It isn’t. Bookkeeping is historical — it tells you what already happened. At £5M, you need someone who can tell you what’s going to happen. That’s a different job, and a different skill.
The third is to hire a full-time finance director too early and discover that a £90,000 salary plus benefits is a significant drag on a business that doesn’t yet need forty hours of strategic finance a week. Within a year, both sides are unhappy. (Here’s what a hire really costs once the extras are added.)
What’s actually needed is something different.
The three shifts that get a business to £10M
Every business I’ve worked with that successfully crossed the £10M threshold made three transitions in how it handled money. Not all at once — usually painfully, often reluctantly — but consistently.
Reactive to proactive. This is the most important one. A reactive finance function looks at the bank balance and the last set of accounts and tells you where you’ve been. A proactive finance function builds rolling cashflow forecasts, scenario models, and management accounts that tell you where you’re heading — and what to do about it before it becomes a crisis. The founders who scale build this before they need it, not after.
Owner-managed to investor-ready. Most £1M businesses are run on founder intuition, which is a perfectly good way to run a £1M business. But at £5M, you’re going to need external capital — debt, equity, or both. The financial rigour that lenders and investors demand isn’t optional, and it isn’t something you can build in the three weeks before a fundraise. Investor-ready governance — proper monthly reporting, clean management accounts, defensible forecasts — is what separates the businesses that raise on good terms from the ones that don’t raise at all. (What investor-ready financials actually means.)
Busy to profitable. The cruellest version of the £10M problem is when growth itself becomes the problem. Revenue is climbing, the team is celebrating, and quietly the business is bleeding margin — through under-priced contracts, through utilisation that’s too low, through WIP that’s ballooning, through receivables that aren’t being chased. I’ve seen businesses go from £3M to £8M and become less profitable in absolute terms. Growth without operational discipline is just busy work that costs more.
Why this stage gets so little attention
This stage of business — the messy, transformative middle — is the least well-served in the financial commentary I read. There’s enormous content for startups (raise your seed round, find product-market fit) and enormous content for big businesses (audit committees, public reporting). Almost nothing for the founder doing £3M who knows something needs to change but doesn’t yet know what. Yet these scaling businesses carry a great deal of the economy: the ScaleUp Institute’s annual review counted a record 44,595 UK scaleups in 2025.
That’s the gap The Scaling CFO is written for: what proactive cashflow forecasting actually looks like, what private equity sponsors want in a board pack, how to spot the margin leaks that are quietly costing you six figures, and the specific situations I see most often in my practice — post-acquisition integration, international expansion, and the financial work that has to happen before you can sell a business well.
It draws on a decade of engagements with companies from £500K startups to £30M international operations, plus the collective experience of the WrightCFO team — alumni of WPP, BBC, Accenture, Virgin Nigeria and Gates Foundation-backed ventures. Real engagements. Real numbers. No theory.
If you’re a founder or MD wrestling with any of this, book a 30-minute call with me and tell me what you’re trying to figure out.
Sophie
Frequently asked questions
Why do businesses stall between £3M and £8M?
Often because the finance function hasn’t grown with the business. At this size decisions are bigger, costs are hidden in working capital, and a bookkeeper and a bank balance no longer tell the founder enough to steer by. Without forecasting and reliable management accounts, growth decisions become guesses.
When should a growing business get a CFO?
Usually before it feels urgent. Between roughly £3M and £10M most businesses need senior finance thinking for a few days a month rather than a full-time CFO, sitting on top of reliable monthly numbers from a bookkeeper or controller.
What does a proactive finance function look like?
It produces timely management accounts, a rolling cashflow forecast, and scenario models that show what will happen under different decisions, so problems are spotted and dealt with before they become crises.
What does investor-ready mean for a scaling business?
Proper monthly reporting, clean management accounts that reconcile, and forecasts that can be defended line by line. Lenders and investors expect this, and it takes months to build, not weeks.
Can a business grow and become less profitable?
Yes. Under-priced contracts, low utilisation, growing work in progress and unchased debtors can mean a business doubles its revenue while its profit stands still or falls.
This article was first published in The Scaling CFO, Sophie Wright’s fortnightly newsletter for founders between £1M and £20M. Subscribe free. Related reading: Your CFO Needs a CFO.
Sophie Wright is the founder of WrightCFO, a UK fractional CFO practice. WrightCFO provides fractional (part-time) Chief Financial Officers to founder-led and private equity-backed businesses, typically between £1M and £20M in revenue, scaling towards and beyond £10M. The practice specialises in cashflow forecasting, margin and pricing, investor-ready reporting, post-acquisition integration and exit readiness, across the technology, creative, media, professional services and not-for-profit sectors. WrightCFO works alongside clients’ existing accountants rather than replacing them.
