Sky News turned 26 years old on Thursday.
"After 25 years, fantastic roller coaster years, I'm leaving Sky News. Articles, books, website and analysis follow - God willing," said Tim Marshall in an announcement.
Over the years at Sky News Tim Marshall has reported from over 30 countries, and worked for BBC radio and television before joining Sky News.
Rhiannon Mills meanwhile is now Sky News' new royal correspondent.
Rhiannon Mills who joined Sky News in July 2010 has taken over from Paul Harrison who has vacated the position to become a senior news editor at Sky News.
