David Cameron has appointed the former head of the government's Implementation Unit as his new principal private secretary.
Simon Case, who served as executive director of the Implementation Group - the Cabinet Office unit set up to to support and coordinate departments’ work on key government policies - between 2014 and 2015, will take on the PPS job from Monday.
He has previously worked as deputy PPS to Cameron, and returns to Number 10 from the GCHQ intelligence agency, where he has been director of strategy since March last year.
Case joined the civil service a decade ago. He succeeds the late Chris Martin, who died last November following a battle with cancer.