The changes follow the appointment of Mark Read, CEO of WPP Digital, as CEO of Wunderman in January.
Singapore-based Spirit has been chief strategy officer for WPP since October 2010. Prior to that he was strategy director for China and APAC starting in 2006. He made Campaign Asia-Pacific's '40 under 40' list in 2013.
As CCO of WPP Digital, Povey will work with Read on developing the WPP Digital companies while also continuing in his role as WPP general counsel.