Most advice on how to scale a business comes from people who got it right the first time, or who are selling you a framework. This isn’t that. It’s what one founder actually did, much of it by accident, some of it wrong, on the way to building a business that now produces millions of pints a year. The real subject isn’t beer. It’s what sustainable business growth looks like when nobody hands you the blueprint, and what it costs when growth outpaces the systems holding it up.
The founder is Sam McGregor, co-founder of Signature Brew.
1. You don’t need a plan to start. You need a problem.
Sam didn’t research a market before starting his business. He noticed something was wrong with the beer at gigs, which was bad, asked the affected people whether they agreed, and built from there. No feasibility study, no five-year plan, just a direct question and a “yes” he could work with.
This isn’t a case for skipping due diligence forever. It’s a reminder that early validation can be simpler than founders make it: find the people with the problem, ask them directly, and listen to the answer.
2. Hustle gets you started. It won’t sustain you.
For the first few years, there was no structured approach to growth, just figuring out how to turn an idea into something that could pay for itself. That instinct-led, undercapitalised period is common, and Sam doesn’t regret it. But he’s clear-eyed about its limits: the same naivety that let him start without overthinking it is the same naivety that, with hindsight, might have stopped him if he’d known what was coming.
This is the gap between hustle and sustainable business growth: hustle gets a business off the ground. It doesn’t keep it standing. Knowing how to scale a business sustainably means recognising when hustle has done its job and structure needs to take over before growth forces the issue.
3. Hire for the gap, not the title.
Early team decisions weren’t built around job descriptions. They were built around who was missing. When growth stalled, the instinct wasn’t “we need a Head of Sales”, it was “I’m not as good at sales as this business now needs, so we need someone better at it than me.” That’s a more honest way to hire than starting with an org chart, and it’s a habit worth keeping even once the business can afford to be more formal.
4. The compliance and admin you avoid doesn’t disappear; it compounds
For years, regulatory and operational knowledge was acquired reactively: you’d discover a requirement existed when someone asked if you had it, and you didn’t. That worked, barely, while the business was small. It stopped being sustainable once growth and the personal load of carrying that uncertainty caught up with the people running it.
If there’s a practical takeaway for anyone working out how to scale a business responsibly, it’s this: the founder instinct to “learn it as you go” is fine for product and market fit. It’s a compliance liability, and the earlier that distinction is made, the less it costs later.
5. Know why you’re doing it before the business becomes your identity.
This is the one Sam comes back to, and it’s where founder burnout usually starts. For years, the business wasn’t something he owned; it was something he felt he was. That fusion of founder and brand is common, particularly in consumer-facing businesses, and it’s rarely interrogated until something forces the question.
His advice isn’t profound, but it’s specific and earned: if you’re working 80 hours a week, something isn’t working properly. That’s not a productivity problem, it’s an early warning sign of founder burnout, and it’s far easier to catch than to recover from. Step back regularly and ask why you’re doing this. The answer changes over time, and circumstances change with it. Founders who never check in on that gap tend to find out the hard way.
The takeaway
None of this is a system. Sam would be the first to say he didn’t have one for most of the journey, and that not having one is part of what cost him. But the principles behind sustainable business growth hold regardless of industry: solve a real problem first, know when hustle stops working, hire for what’s missing, get ahead of the boring stuff before it gets ahead of you, and don’t let the business answer the question of who you are. That’s how to scale a business and stay standing once you have.
This piece draws on a conversation with Sam McGregor, co-founder of Signature Brew, on Unfiltered with Brij Thankey. Listen to the full episode at brijthankey.com.
Watch the full episode on YouTube, or listen on Spotify, and Amazon Music
Frequently Asked Questions
What is sustainable business growth?
Sustainable business growth means scaling a company without outpacing the systems, people, and structures that support it. Unlike growth driven purely by hustle, it factors in long-term capacity, financial, operational, and personal, so the business can keep growing without breaking the people running it.
How do you scale a business without burning out?
Start by building structure before growth forces it on you: define roles around actual gaps rather than guesswork, get ahead of compliance and admin early, and regularly check in on why you're doing the work. Founders who scale sustainably tend to treat burnout prevention as part of the growth strategy, not an afterthought.
What are the early warning signs of founder burnout?
Working excessive hours, Sam McGregor points to 80 hours a week as a clear signal, is one of the most reliable indicators that something in the business model isn't working. Other signs include losing the ability to separate personal identity from the business and avoiding small operational tasks, like compliance, until they become urgent.
Do you need a business plan to start a company?
Not necessarily. Many successful founders start by identifying a real, specific problem and validating it directly with the people affected, rather than beginning with a formal plan. A plan matters more when deciding how to scale; it matters less when simply starting.
When should a founder start hiring a leadership team?
A useful signal is when you can clearly name a skill gap rather than a job title, for example, “we need someone better at sales than I am,” rather than “we need a Head of Sales.” Hiring around real gaps, rather than an idealised org chart, tends to produce better early decisions than hiring on a generic growth timeline.
