One Day Agency

One Day Agency is an independent integrated advertising and marketing agency headquartered in Manchester, UK, with offices in London, Warsaw, Paris, and Berlin. We exist to break outdated agency-brand barriers and models for one simple reason: marketing is fluid — your agency should be too. Unlike traditional setups, we operate as a single cross-functional senior team — eliminating silos to deliver well-balanced, full-funnel, audience-centric strategies and campaigns. From fit-for-purpose creative to precision media buying, we build campaigns that work. Awards & Recognition Top 50 Integrated Agency 2023 — Fastest-growing agency in the North West 🥇 Global Biddable Agency of the Year — GDXA 🥇 Best Use of Research — GDXA 🥇 Best Use of Research — UK Digital Growth Awards Contact Us hello@oneday.agency 020 7074 4314 45 Cross St, M2 4JF Services Creative, Digital Marketing, Out-of-Home Media, Broadcast & VOD Advertising, Radio, Media Buying & Planning, Strategy, Brand Growth, Ecommerce, B2B, B2C, D2C, and more.