The provisional club allocations for steps 5 and 6 were announced by the FA on 25 May 2018.
[1] The constitution was ratified by the league at its AGM on 8 July.
The Premier Division featured 14 clubs which competed in the division last season, along with five new clubs: Also, Highmoor Ibis was renamed Reading City.
Division One East featured ten clubs which competed in the division last season, along with four new clubs:
Division One West featured nine clubs which competed in the division last season, along with five new clubs: