ITV has announced chief executive Adam Crozier is to step down.
Crozier has been with the broadcaster for seven years, a successor will be announced "in due course".
During the interim, ITV chairman Sir Peter Bazalgette will take on the role of executive chairman, while finance director Ian Griffiths is to lead the executive team until a replacement is appointed.
Bazalgette said: "Adam has made a fantastic contribution to ITV and the board is deeply indebted to him for his strong leadership and personal dedication in very successfully turning around the business, and building a more global and diversified organisation with real scale in key creative markets around the world."
Crozier, a former boss of the Football Association and Royal Mail, said: "Having spent 21 years as a chief executive across four very different industries, I now feel that the time is right for me to move to the next stage of my career and to build a portfolio of roles across the plc and private sectors."