National League 1, (which was known before September 2009 as National Division Two), is the third level of domestic rugby union competition in England. It was known as Courage League National Division Three when founded in 1987. This is the lowest level of the English rugby union league system which is nationwide. The league consists of sixteen teams with all the teams playing each other on a home and away basis to make a total of thirty matches each. There is one promotion place and three relegation places. The champions are promoted to the Greene King IPA Championship and the bottom three teams are relegated to either National League 2 North or National League 2 South (formerly National Division Three North and South) depending on the geographical location of the team.