Top 50 Integrated Agency 2023. Drum Recommended Agency.

UK, Poland, France & Germany.

About One Day.

A Leading Advertising and Marketing Agency.

Creative. Media. Digital.

Finally speaking the same language.

One Day Agency is an independent integrated agency headquartered in the UK and Europe, with work that spans more than 35 countries. We help ambitious brands move beyond outdated agency structures. By removing knowledge silos, we deliver a unified approach where creative, media and marketing work together, connecting your story to audiences globally without friction.

Our Work

Inside One Day

A Brand in One Day

We Bridge the Gap.

We didn’t build One Day to be another name on a roster. We founded the agency in 2019 because we saw an opportunity to work in a more connected and collaborative way. Too often, creative and media are separated into different tracks, which works against how modern marketing actually operates.

Our approach removes those gaps. We bring advertising, marketing and media together into one integrated workflow, reflecting the reality of today’s digital and cross channel environment where ideas, content and distribution need to inform each other from the start. The work we deliver across markets shows that when everything is built together, campaigns perform with clearer purpose, stronger consistency and far more impact.

We Operate Without Borders.

From a standing start in Manchester in 2019, we have rapidly expanded into a global force. Today, One Day operates across Manchester, London, Warsaw, Paris and Berlin, delivering campaigns that resonate from the UK to all corners of the world and brands of all sizes across all industries.

We do this by working directly with media owners in every region rather than relying on network agencies or layers of specialists. Our teams plan and negotiate with local publishers, platforms and outdoor operators ourselves, giving you the scale of an international agency with the speed and cost efficiency of a single partner. Every market is managed in house, so nothing is lost in translation and every campaign lands with local relevance.

International Work

We Are Proof That "No-Silos" Works.

In a few short years, we’ve grown from a challenger to a recognised Top 50 Integrated Agency. Our work has been celebrated globally, including awards for strategies that connect data and creativity in a truly integrated way. At the core of this is our cross functional model, where creative, media, strategy and analytics work as one team. This brings sharper insights, faster iteration and stronger creative decisions because everyone is aligned around the same objectives from the start. It is this structure that enables us to run complex multi market campaigns for brands like BigCommerce, Cineworld, Visit Jordan and leading ecommerce players, delivering clear, cohesive execution across more than 35 countries through a model built to operate seamlessly across borders.

We Lead From the Front.

You will not find layers, gatekeepers or a split between people who plan and people who deliver. One Day is built as a fully practitioner led agency where everyone works at the same level. Strategy, creative, media and delivery sit together, and every brief, plan and campaign is shaped collectively by the team.

There is no hierarchy in how work gets done. The same people who speak with clients are the ones building the thinking, developing the ideas and executing the work. This creates shared ownership, clearer decisions and a culture where everyone is accountable for the outcome. It also adds a tremendous amount of value, because the people closest to the work are the ones driving it forward, informed by context rather than relying on layers of interpretation.

For clients, it means you always engage directly with the people who are actually doing the work, not a layer managing it from a distance. It keeps communication sharper, ensures nothing is lost in translation and gives every campaign the benefit of a unified team working as one.

We Only Deploy Senior Talent.

The industry habit of pitching with seniors and delivering with juniors ends here. We deploy senior talent end to end, and no one at One Day has less than six years of experience in their field. The people shaping your strategy are the same people executing it, ensuring depth of expertise at every stage.

We also operate without a Client Services department. Traditional account management often creates an unintended buffer between you and the work itself. By removing that layer, our incentives stay fully aligned with your success. You speak directly to the practitioners solving your problems, which keeps communication sharper, protects the integrity of the strategy and ensures decisions are made by those with the context and expertise to drive results.

All-Senior Team.

Ricardo | Founder & CEO

Anita | Poland Director

Klaudia | Head of Growth

Marina | People & OPS

Kerry | Media

Alex | Media

Shelby | Growth

Alexandra | Media

Scott | Growth

Stephanie | Growth

Pixel | Kennelytics

Codie | Chief Tail Wagging

Jeff | Meowketing

Dominic | Design

Kris-Anne | Head of Design

Wiam | Marketing

Sailor | Growth

Meet the Team
Careers at One Day

Partners & Memberships

shopify partner
meta business partner
tiktok marketing partner
klaviyo partner

Recognised by

Top 50 Integrated Agency 2023
See Our Work

What our clients are saying…

  • Codorníu Raventos - International Brand Manager Europe & Asia

    “About Nielsen data: It is once again very positive for us because while the category fell by 11.6% in value, and the cava category decreased by 5.6%, we are once again the green dot in the data, growing vs. the previous year's and increase of market share. These results are clearly related to the MKT campaigns during April and July. So, once again, thank you very much for your wonderful support. We are achieving great things in the UK thanks to these impactful marketing campaigns.”

  • Mark Hodson, VP of Marketing at UNiDAYS

    "Freshers is such a pivotal moment for UNiDAYS. As the UK's leading student platform, working with a tried and trusted team was key. We've found that in One Day. Their professionalism and unique approach to measuring effectiveness and incrementality is truly exceptional".

  • General Manager, Itchy Baby Co

    “We needed a digital agency that rocks the pants off it in the social & digital space that was fast, flexible, insightful and fun. Critical for us was someone that was responsive, really understood paid digital, and had the ability to make short, sharp, quick creative ads. One Day is that Agency. We are extremely excited to see what 2021 brings working with the talented team as we launch into the UK.”

  • Gurveer Chana, BigCommerce's Demand Generation Manager

    “It was an incredible experience partnering with IDA agency. We handed them a strict budget, and they met it and exceeded our expectations. Their professionalism, creativity, and unwavering support were instrumental in our campaign’s success. From designing ad t picking locations and strategies, the were with us every step of the way, and we couldn’t be happier with the results.”

One Day Updates

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Integrated Marketing and Advertising Agency focused on behaviours rather than audience groups.

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