Hannah Campbell

Founder & Managing Director
One Twelve Agency

Hannah Campbell is the Founder and Managing Director of One Twelve Agency, a culture-led influencer marketing agency built on the belief that authentic representation should be integral to campaigns, not an afterthought. After seeing cultural nuance repeatedly overlooked in the industry, Hannah set out to build an agency that puts insight, inclusivity and integrity at the heart of brand storytelling.

Since launching in March 2022, One Twelve Agency has quickly established itself as a trusted partner for brands seeking culturally relevant, meaningful influence including LVMH, PUMA, Prime Video, HubSpot and Chivas Regal.

Hannah’s leadership and impact have been recognised across the industry, with her being named one of Management Today’s 35 Women Under 35 in 2023, and later listed among Girls in Marketing’s Top Marketers to Follow in 2026 and shortlisted for Best Agency at the Black Comms Network Awards 2026.