Watch the ‘Merlin’ series 5 Official Original British Drama Trailer (which first aired on BBC One on July 28), with the tagline:, “A NEW KING. A NEW ERA. AN ANCIENT LEGEND.”

Series five is set to be full of change, with a new Queen and more focus on the four main characters of Arthur (Bradley James), Gwen (Angel Coulby), Merlin (Colin Morgan) and Morgana (Katie McGrath). As Morgana says: “Prepare for battle.”