The head of corporate governance at one of the largest asset managers in Europe, who was a leading critic of mining group Vedanta in an investor campaign this summer, has left to start his own firm.

Paul Frentrop, head of corporate governance at APG Asset Management, which manages €208bn for Dutch pensions scheme ABP, will officially leave his role on December 31. Rob Lake, head of the environmental, social and governance team at APG, will replace Frentrop.