 Another restructure in 1921 saw the formation of five regions and the knock-out stage of the championship extend to semi-finals and a final.The winners of the North East, North West and South East regions were entered into a semi-final draw along with the winners of a play-off between the winners of the South and South West regions.From 2007 to 2016, the top eight counties were split into two regions of four teams, North and South, who played a round-robin tournament.