The 2008–09 was the 41st season for the Northern Premier League Premier Division, and the second season for the Northern Premier League Division One North and South. As continuing part of non-league restructuring, the Division One South temporarily has 20 teams, while the Division One North contains 21, with a targeted number for both of 22 teams. This will naturally affect the number of relegation slots available this season, as the league attempts to enlarge the size of the divisions at the end of the season.