One Day Turns Six: Big Wins, 60% Growth and a European Adventure in France Ahead
One Day Turns Six: Big Wins, 60% Growth and a European Adventure in France Ahead
Six years ago, One Day Agency launched in Manchester with a bold question: what if creativity, media and performance could operate as one team? No separate departments, no long handovers, just a single, streamlined process from idea to execution.
That question has since become the foundation of one of the region’s fastest growing integrated agencies, now building its presence on the international stage. As One Day marks its sixth birthday, the team is looking back on a year defined by strong growth, major client wins and a clear route into Europe.
A Manchester Integrated Agency with Global Ambition
From day one in 2019, One Day set out to rethink the traditional agency set up. Rather than splitting creative, media and performance into separate units, the agency brought every discipline together under one roof, so the whole team could collaborate from the start of each brief.
This way of working has been central to One Day’s progress. It has enabled the agency to handle the disruption of the post pandemic years, respond quickly to changing media habits and support brands across entertainment, regulated sectors and global technology.
The impact is clear. One Day closes 2025 with 60 percent year on year growth and a client list that is stronger and more diverse than ever.
Big Wins and Growing Global Reach
In the past year, One Day has added several high profile brands to its roster, including Cineworld Cinemas, Betway and JetBrains. These partnerships show the agency’s ability to deliver integrated, performance-led campaigns across paid social, out of home, TV and international markets.
Each new relationship highlights One Day’s strength in uniting creative thinking, media planning and data insight into a single, cohesive approach. By removing traditional departmental silos, the agency offers the kind of efficiency and impact that brands increasingly look for in a fragmented media landscape.
From Manchester to Europe
Alongside its UK growth, 2025 has been an important year for One Day’s international plans. In 2024, the agency opened its Warsaw office in Poland, which now supports the delivery of campaigns for global brands across Europe.
With that foundation in place, One Day is preparing for its next major step: reinforce its expansion into France in 2026, to pursue the agency’s integrated model into this market and deliver global scale campaigns.
For a Manchester based agency, this is a significant milestone. It shows how locally built ideas, backed by global ambition, can succeed on the wider European stage.
The People Behind the Progress
One Day’s story is not only about growth figures, it is about the people who made that growth possible. What began as a founder-led start-up has become a multi-market integrated agency, with teams operating from Manchester, London and Warsaw. The pace at which the agency moves is driven by a flat structure, quick, strategy led decisions and a culture where collaboration sits at the centre of how work gets done.
CEO Ricardo Seixas, whose international experience continues to guide the agency, puts it in his own words:
“We started with a simple idea, creative, media and performance should work as one, not in separate silos. Six years later, that idea is proving to be the foundation for our success. The growth we’ve seen this year, and the brands we’re working with, show that our model works. We’re ready to continue pushing boundaries as we take on new international challenges.”
Marketing Manager Wiam El Youbi, shares what this moment means for the team:
“Six years feels like a milestone and a launchpad. What started as a small idea in Manchester has grown into a team running campaigns across continents. Our 60 percent growth this year and the calibre of brands joining us show the strength of our integrated model. We’re excited to keep building on this success as we prepare to expand into France in 2026.”
Looking to the Future
With strong momentum behind it and a clear European expansion plan, One Day is well positioned for what comes next. The agency will continue to grow, deepen its partnerships with global brands and invest in creative innovation and performance driven media.
As One Day Agency extends its reach across Europe, it remains firmly rooted in Manchester and committed to its original ambition: to build a global integrated agency that consistently delivers work ahead of what the market demands.
