Why has it become so difficult for new architecture practices to reach the UK’s top tier?
The UK's largest architecture practices are overwhelmingly long-established businesses. So why have only five practices founded this millennium reached the AJ100?
There is a version of British architecture’s recent history that gets told often: a generation of ambitious young studios shaking up a hidebound profession, winning work on talent rather than pedigree, and building genuinely successful practices in the process. It’s a good story. It’s also, increasingly, a historical one.
Every June, the AJ100 provides an annual snapshot of Britain’s largest architecture practices. Published at the end of last month, this year’s survey has been widely discussed in terms of turnover, staffing levels and sector performance. Looking back through the data, however, Beedier was struck by a different trend altogether.
Rather than asking which practices had moved up or down the rankings, we looked at when they had been founded. The results were revealing.
Of the UK’s 100 largest architecture practices, just five were established in 2000 or later. Sixteen were founded during the 1990s, twenty-six in the 1980s, thirteen in the 1970s, fourteen in the 1960s, sixteen in the 1950s and immediate post-war years, while thirteen pre-date the Second World War. Remarkably, six of those trace their origins back to Victorian practices.
The five firms founded this millennium are dMFK Architects (2001), GT3 Architects (2004), Morris+Company (2004, founded as Duggan Morris), Studio Egret West (2004) and Kettle Collective (2012).
Taken in isolation, these figures might appear to be little more than an interesting demographic observation. Yet they point towards a more fundamental question about the business of architecture. The practice occupying 100th place in this year’s AJ100 employs 26 architects, 47 staff and reports an annual turnover of £4.3 million. Those are impressive figures, but they are hardly the scale of an international corporate practice. Given the number of talented studios founded over the past quarter-century, why have so few reached what appears, at least on paper, to be an attainable level of growth?
Against the trend
Before asking why so few firms have broken through, it is worth recognising the achievement itself. Building an architecture practice has never been straightforward. Building one large enough to enter the UK’s top 100 has always demanded far more than design talent alone. To achieve that during the past twenty-five years – against a backdrop of tighter fees, increasingly complex procurement, greater regulatory responsibility, economic uncertainty and rapid technological change – makes the success of these five practices particularly noteworthy.
Beedier approached each of them to understand how they had managed that growth, and Kettle Collective and dMFK Architects generously shared their thoughts and experiences. Although their businesses have followed different trajectories, their answers reveal strikingly similar themes. More interestingly, neither began by talking about architecture.
Instead, they spoke about finance, organisational culture, commercial discipline, leadership, technology and long-term relationships. In doing so, they highlighted an important distinction between creating a respected design studio and building a resilient business.

Colin Bone | Kettle Collective
The business behind the buildings
Founded in 2012, Kettle Collective has grown from a start-up into one of the UK’s largest internationally focused design practices in little more than a decade. For CEO Colin Bone, the defining challenge has not been winning work or maintaining design quality but managing the financial realities of growth itself.
“Managing cash flow has been one of the biggest challenges throughout our growth journey, particularly in the early years. As a young practice delivering large international projects, we were investing in people and building the business while navigating payment cycles that could extend well beyond the work being delivered.”
It is a striking answer precisely because it is so unglamorous. Architectural culture tends to celebrate commissions, buildings and awards, yet sustained growth often depends upon less visible disciplines. Expanding practices must recruit ahead of income, invest continually in technology and management systems, and absorb payment cycles that rarely align with the pace of delivery. Growth therefore becomes as much a question of financial resilience as creative ambition.

Jonny Wong | dMFK Architects
For dMFK Architects, established in 2001, the defining challenge has been different. Director Jonny Wong argues that success depends not simply on growing a business, but on preserving the qualities that persuaded clients to appoint the practice in the first place.
“The hardest thing has been scaling without losing the qualities that made clients choose dMFK in the first place: judgement, care, and direct senior involvement. Growth is not just about adding people. It is about building a culture where responsibility, design quality, and commercial discipline travel through the studio without becoming diluted, and where clients can trust the advice they receive from everyone at dMFK, not just the directors.”
Taken together, the two perspectives describe perhaps the central challenge of scaling an architecture practice. A business must finance its own expansion while simultaneously ensuring that the judgement, trust and personal relationships on which it was founded are not diluted as the organisation becomes larger.
A more demanding profession
Both practices are unequivocal that building an architecture business has become more demanding over the past two decades, although they identify different reasons for that change.
Bone believes the environment for growing a practice has become significantly more competitive, driven both by client expectations and technological change:
“There are more talented practices than ever before, clients have greater choice, and technology has raised client expectations across the industry. Digital tools and AI are making firms more efficient and enabling smaller practices to compete at a higher level, which ultimately raises the standard across the profession. In today’s market, standing still isn’t an option. Success comes from continually innovating, investing in people and embracing new technology.”
Rather than viewing these changes as a threat, Bone sees them as a challenge to evolve. Technology has lowered barriers to entry for smaller practices, but it has also raised the benchmark for everyone. Continuous investment in people, systems and innovation has become essential simply to remain competitive.
Wong paints a broader picture of structural change. He describes a profession facing greater commercial risk, sustained fee pressure and clients who increasingly expect architects to provide strategic, technical and commercial advice alongside design expertise. More significantly, he believes architecture has yet to make a sufficiently coherent case for the value it creates.
“There is also a profession-wide problem around how architecture’s contribution is understood and valued by clients, developers, and procurement teams. Until the sector makes a more coherent, evidence-based case for what good architecture delivers commercially and socially, fees and influence will continue to be eroded.”
It is an important observation because it shifts the discussion beyond individual businesses. If one of the few practices to have successfully scaled believes the profession itself has become less effective at articulating its value, then the scarcity of post-2000 firms in the AJ100 begins to look less surprising.
Growth with purpose
Looking ahead, both practices reject the idea that success is simply about becoming bigger. Instead, they argue that the next generation of successful firms will need a clearer sense of purpose, underpinned by disciplined business strategies and a well-defined proposition.
For Colin Bone, sustainability will become the defining driver of future growth.

Kettle Collective Studio
“The next generation of successful practices will need to place sustainability at the centre of how they think about growth. In many of our cities, the greatest opportunity lies not in building more, but in reimagining what already exists. As the industry moves towards a more circular approach to development, architects will play an increasingly important role in unlocking the potential of existing building stock.”
Wong arrives at a similar conclusion from a different perspective. Rather than focusing on size, he argues that successful practices will distinguish themselves through expertise, adaptability and long-term relationships.
“The next generation will need to be both more specialist and more adaptable: clear about what they are genuinely excellent at, but nimble enough to respond to changing markets, procurement routes, technology, and regulation. Sustainable growth will come from practices that invest in their people, build trusted teams around them, and develop long-term client relationships rather than simply chasing volume.”
Taken together, their responses suggest that the next generation of successful architecture practices will not be defined by size alone, but by clarity of purpose. In an increasingly competitive profession, sustainable growth is likely to depend less on pursuing every opportunity than on developing a distinctive expertise, investing in people and building resilient businesses capable of adapting to a rapidly changing market.
More than a league table
The AJ100 is often read as a league table, but this year’s data also tells another story. It suggests that while Britain continues to produce outstanding architects and ambitious new studios, the path towards building a substantial practice has become markedly narrower than it once was.

dMFK Architects Studio
The experiences of Kettle Collective and dMFK offer no single explanation, nor any simple formula for success. Instead, they describe the accumulation of financial discipline, organisational maturity, technological adaptability and commercial judgement over many years. None of those qualities are especially visible from the outside, yet together they may explain why the apparent gap between “achievable” and “achieved” has become so difficult to bridge.
That should matter to the profession. Healthy industries continually renew themselves, creating space for new businesses to emerge, mature and eventually join the established leaders. The five practices founded since 2000 demonstrate that this remains possible. Their success deserves genuine recognition because it has been achieved against a tide of commercial and structural constraints that many of their contemporaries have found difficult to overcome.
Whether the next AJ100 contains more names from the twenty-first century will depend not simply on the talent of the next generation of architects, but on whether the profession creates conditions in which talented practices can also become enduring businesses. That may prove to be one of the defining challenges for British architecture over the next quarter-century.
Colin Bone is Co-founder and Director of Operations, Development and Strategy at Kettle Collective. With more than 30 years’ experience in international architecture, he has led the delivery of major projects across Europe, the Middle East and Asia, while overseeing the practice’s strategic growth and operations.
Jonny Wong leads a diverse portfolio of workplace, residential, co-living and cultural projects at dMFK across the UK and Middle East. Combining design leadership with commercial insight, he helps shape the practice’s strategic direction, client relationships and studio culture, while contributing to the wider profession through mentoring and his roles on the Oxford Street Development Corporation and Greenwich Design Review Panels.