Leo UK

One of the UK's leading creative network agencies, now operating under Publicis Groupe's Leo network following the 2025 rebrand from Leo Burnett UK.

Leo UK is the London-based creative agency that emerged from the July 2025 rebrand of Leo Burnett UK, now operating under the newly launched Leo network — a creative constellation within Publicis Groupe that unites Publicis Worldwide and Leo Burnett globally. Headquartered in London, the agency has a long heritage of producing culturally resonant, award-winning advertising work for some of the world's most recognised brands, spanning FMCG, automotive, retail, finance, and beyond. The rebrand to Leo marks a significant strategic evolution, positioning the agency within a broader, more integrated creative offering under Publicis Groupe's umbrella. As part of the Leo network, Leo UK benefits from global scale while maintaining a distinctly London creative identity. The agency is known for its human-centric creative philosophy — rooted in Leo Burnett's foundational belief in the power of 'Humankind' — and has consistently ranked among the UK's leading creative agencies in industry awards and new business performance. Its client roster has historically included major names such as McDonald's, Samsung, Kellogg's, and Fiat, among others. In the broader AdTech and advertising ecosystem, Leo UK occupies the premium end of the creative agency market, competing with other major network agencies for large, integrated brand briefs. Its integration into the Leo network and Publicis Groupe's broader data and technology infrastructure — including tools like Epsilon and Publicis Sapient — gives it access to sophisticated audience intelligence and media capabilities, differentiating it from independent creative shops.