The Northern Premier League (NPL), officially known as Pitching In NPL is an English football league that was founded in 1968. It forms the seventh and eighth levels of the English football league system along with the Isthmian League and the Southern League. Collectively these leagues are called the Trident Leagues. Geographically, the league covers all of Northern England and the northern, central areas of the Midlands, and western parts of East Anglia. Originally a single-division competition, a second division was added in 1987: Division One, and in 2007 a third was added when Division One split into two geographic sections - Division One North and Division One South. In 2018 Division One was re-aligned as East and West Divisions, then North West and South East in 2019. In 2021, the FA restructured the non-League football pyramid and created Division One East, West, and Midlands. Successful teams at the top of the NPL Premier Division are promoted to level 6 of the pyramid (either National League North or National League South), and at the bottom end of the competition, teams are relegated down to level 9, where several regional feeder leagues promote clubs into the league.