The leadership of ONE HUNDRED EMEA is made up of senior practitioners from across a variety of Omnicom’s agencies. They are united in their desire to develop collective, impactful opportunities to collaborate and deliver on our clients needs. They bring with them decades of experience across all sectors and from around the world.

Our Leadership

John O’Brien, MBE

Managing Partner

Emma Sergeant

Managing Partner

David Gallagher

Partner

Fenella Grey

Partner

Jim Donaldson

Partner

Annamaria Khan-Rubalcala

Partner

Mark Flanagan

Partner

Brian Crimmins

Partner

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