It comprises eight teams, with each playing the others once in a round robin format, followed by a split into two divisions comprising the top half and bottom half of the league.

The bottom two teams in the bottom half division play in a relegation playoff to determine relegation to National League Division 2.

All eight teams meet at a central venue with most matches being played on a Saturday at Bell's Sports Centre.

Five different clubs have won the Scottish Indoor National League Division 1 title.

[14] Scottish men's club sides have also competed in the top tier 'A' Division on eleven occasions, with the highest placings being third for Edinburgh Civil Service (1990) and fourth for Menzieshill (2008).