mark halliday


Mark has been working across Omnicom Media Group for 13 years and is now in his second stint at MG OMD. Mark started his career as a planner buyer across all media channels and joined MG OMD as a comms planner in 2007, then moving into digital strategy and ultimately becoming the agency's Head of Mobile. In 2013, Mark followed the mobile momentum to Asia, where he became Head of Mobile for Omnicom Media Group APAC and then progressed into regional leadership roles in programmatic and performance media. Returning to the UK as Chief Digital and Data Officer in 2019, Mark now works with agency teams to deliver excellence in digital execution, data strategy, measurement & effectiveness and the application of the Omni platform – Omnicom's people-based precision marketing and insights platform. Mark's holistic experience allows him to take a solution-first approach when working with clients to drive business growth.