Building a successful company and scaling it are two completely different problems.
Most founders assume that once you have something that works, growth is just a matter of doing more of it.
In reality, high growth tends to break the very thing that made the business successful in the first place.
I founded One Day Agency in 2019, after more than 20 years working across digital advertising, from early design roles to leading teams at Google and agency groups internationally.
Today, we are an integrated advertising and marketing agency headquartered in Manchester, operating across 35 countries without intermediaries, with a team of 18 people.
We are on track to reach £7m in revenue this year, up from £4.5m last year, while expanding into France and continuing to build our position in generative AI-led advertising in the North West.
Getting to a point where a company works, where it has clients, revenue and a clear proposition, is already difficult. But it is a contained problem.
You are operating within a structure that you understand. The team fits the stage. Decisions are relatively fast. Complexity is limited.
Growth changes that overnight.
As revenue increases, the systems, people and processes that got you there start to fail.
What worked at £500k does not work at £2m. What worked at £2m does not work at £5m.
The structure stretches and eventually breaks.
One of the first things that becomes obvious is that not everyone scales with the business.
This is uncomfortable but unavoidable. People who were excellent at an earlier stage may no longer be the right fit when the company grows.
The requirements change. The level of ownership changes. The pace and pressure increase. Suddenly, you need senior operators who have done it before.
And those are significantly harder to hire than any client you will ever win.
Most founders underestimate this. They focus heavily on new business, but the real bottleneck becomes talent.
Finding people who can manage teams, own revenue and operate across markets is far more complex than closing a deal. And without them, growth stalls or becomes chaotic.
At the same time, the nature of decision-making shifts. Early on, you are focused on opportunity.
During high growth, you spend more time managing risk. Cash flow becomes critical. Hiring decisions carry more weight. One wrong move can create months of instability.
This is where many companies start to struggle. Not because the idea is wrong, or the demand is not there, but because the business was not built to handle its own growth.
Growth introduces layers. More people, more clients, more markets, more moving parts.
Communication becomes harder. Alignment becomes harder. Execution slows down. What used to take a day now takes a week. What used to be obvious now requires process.
If not managed properly, growth turns into inefficiency.
We have seen this repeatedly in the market. Companies that grow fast but do not evolve their structure often hit a ceiling or collapse under operational pressure.
Beware BrewDog
Recent examples like BrewDog highlight this clearly. Rapid expansion without the right internal foundations creates long-term challenges that are difficult to reverse.
The reality is that growth management is one of the hardest parts of building a company. It requires a constant rebuild of the organisation. New structure, new people, new processes, often before you feel ready for them.
It is also less visible than success. Revenue growth looks impressive externally. Internally, it is usually a constant state of adjustment, tension and trade-offs.
For founders, this means shifting mindset. The goal is not just to build something that works, but to build something that can keep working as it scales.
That requires being proactive about change, not reactive to problems.
Growth is not a reward. It is a new level of difficulty.
And in many cases, it is where the real work actually begins.
- One Day Agency is an integrated agency headquartered in the UK and Europe, with work that spans more than 35 countries.