British special envoy to Sudan and South Sudan Chris Trott has been appointed Her Majesty’s Ambassador to South Sudan.
Trott succeeds Ms Alison Blackburne.
The Foreign Office said in a statement on Tuesday that Mr Trott will take office in May 2019.
The top British diplomat played a key role during talks to revive South Sudan’s failed 2015 peace pact and end the country’s civil war.
He was appointed as a special envoy to Sudan and South Sudan and Head of Joint FCO/ Department for International Development (DFID) Sudan Unit in 2016.
In 2007, Mr Trott was appointed as Ambassador to Senegal, Mali, Cape Verde and Guinea-Bissau.
He also served as British High Commissioner to the Solomon Islands, Vanuatu and Nauru until July 2016.