We’ve seen Davie and Turness’s statements in full – here’s how the BBC’s chairman has responded.
Samir Shah said of Davie: “Tim has been an outstanding director-general for the last five years.
“He has propelled the BBC forward with determination, single-mindedness and foresight.
“He has had the full support of me and the board throughout.
“However, I understand the continued pressure on him, personally and professionally, which has led him to take this decision today.”
Shah also labelled the outgoing director-general “a devoted and inspirational leader and an absolute believer in the BBC and public service broadcasting”.
“Personally, I will miss his stamina, good humour and resilience and I will miss working with him,” he continued.
Turning his attention to Turness, Shah said: “She has transformed the operation of news with real commitment and a clear vision of the future.
“She has acted with integrity in challenging circumstances and leaves a strong legacy from which to build for the many millions around the world who rely on and trust the voice of BBC News every day.”