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 We exist to break outdated agency-brand barriers and models for one simple reason: marketing is fluid — your agency should be too.Unlike traditional setups, we operate as a single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 AwardsContact Ushello@oneday.agency020 7074 431445 Cross St, M2 4JFServicesCreative, Digital Marketing, Out-of-Home Media, Broadcast & VOD Advertising, Radio, Media Buying & Planning, Strategy, Brand Growth, Ecommerce, B2B, B2C, D2C, and more.