Law firm Clifford Chance director of human resources, Liz Bunce, will leave the firm at the end of the month.
It is believed that Helen Anthony, deputy to Bunce, will be promoted to head up the HR team.
Bunce joined Clifford Chance from Allen & Overy in 2003 and has overseen bringing the various practice areas under one system.
It is not yet known where Bunce is moving to.