Division One South is one of the two second-tier divisions of the Northern Premier League. It is at Step 4 of the National League System, placing it at the eighth level of the overall English football league system, seven divisions below the Premier League. For sponsorship reasons, it is also referred to as the Evo-Stik League Division One South. At the end of the season, the champion of the league is promoted to the Northern Premier Division. The teams placed 2nd to 5th engage in a playoff to determine which team is also promoted. The teams placed 21st and 22nd are relegated to level 9.