UK will report financial numbers directly to CEO Arthur Sadoun.
Previous regional leader Loris Nold has been assigned CEO for EMEA as Publicis continues to reshape its global leadership.
She will start as Southeast Asia group CEO on June 1.
Natalie Lam, who most recent position was with Google in NYC, will be charged with raising the creative bar not just in the group's creative agencies but across the board.
The Groupe also announced changes impacting Publicis Health, Publicis Communications North America and Leo Burnett.
Company names CEO and chairman for Publicis Communications ANZ, Australia CEO for Leo Burnett.
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