Premiership Rugby is an English professional rugby union competition. The Premiership consists of twelve clubs, and is the top division of the English rugby union system. Premiership clubs qualify for Europe's two main club competitions, the European Rugby Champions Cup and the European Rugby Challenge Cup. The team finishing at the bottom of the Premiership each season is relegated to the second-division RFU Championship, and the winner of the Championship is promoted to the Premiership. The competition has been played since 1987, and has evolved into the current Premiership system. The current champions are Exeter Chiefs. The most recently promoted side is London Irish, who have returned to the top flight after defeating Yorkshire Carnegie in the 2016–17 RFU Championship Play–Off Final.