About

At December19, we believe that exceptional business outcomes stem from unwavering clarity in media strategy. As an IPA effectiveness-accredited agency and certified B-Corp, we've developed a unique approach that transforms complex challenges into measurable success. Through our Clearly Effective Media framework, we deliver business growth via transparent, data-driven strategies that cut through complexity, while honouring our commitment to social and environmental responsibility.

What truly sets us apart is our three-pillar approach to client success. First, our commitment to transparency is embedded in everything we do – including our industry-leading Optix platform which provides real-time campaign visibility, and which CAN co-founder Harriet Kingaby described as "showcasing (D19's) dedication to pioneering impactful practices that deliver value for brands and society". Second, our effectiveness-first methodology, backed by IPA accreditation, ensures we're not just delivering campaigns but driving genuine business results. Third, our proprietary Prism planning philosophy recognises that every brand's journey is unique, requiring bespoke solutions powered by innovation and deep insights.

Through transparent practices, innovative thinking, and a commitment to doing the right thing, we help brands achieve sustainable growth while making a positive impact on society and the environment. At December19, we transform media complexity into clearly effective strategies, delivering measurable business success, powered by purpose.