Brave Bison welcomes Buster Dover as new COO

Brave Bison has appointed Buster Dover as the group's COO. Dover, who was previously the MD of Zinc Network and MullenLowe, has worked in the creative industry since the late 1990s. His career has spanned advertising, digital media and social change agencies, from small independents to large networking groups.

Hannah Kimuyu was also promoted to managing director of Greenlight Digital. Formerly director of paid media, data and analytics, Kimuyu will be responsible for performance channels including paid media and SEO as part of the new offering, using her knowledge of the Greenlight business and digital space to unlock new opportunities for current and future clients. Her appointment also heralds a new, more integrated way of working with existing clients. For the first time in the company's history, paid and earned media will be overseen by the same executives.