In the new role, she is to head up the firm's Which? account and work with other clients including Marriott Rewards and VNU Publishing.
"It's a pleasure to join a team of seasoned individuals who are proud to be DMers, who have fire in their bellies and the best interest of their clients at heart," Thurgood said.
While at EHS Brann, her clients included British Gas, OneTel Telecommunications, The Economist and Habitat.
WPN managing partner John Watson added: "Her previous areas of agency experience will enhance our team's value."
Prior to working at EHS, Thurgood worked at Marketing Drive where she held positions including new-business development director.
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