Margate were reprieved from relegation for the second season in a row, this time after Chester City and Farsley Celtic folded and Grays Athletic were demoted from the Conference Premier to Isthmian League Division One North.
Leyton were reprieved from relegation after numerous higher league clubs folded.
VCD Athletic were demoted after failing to meet ground grading requirements and returned to the Kent League.
Harlow Town were reprieved from relegation after an appeal by VCD was turned down.
Walton Casuals and Eastbourne Town finished in the relegation zone but were reprieved due to the resignation of Ashford Town (Kent) and as a knock-on effect from Merthyr Tydfil's expulsion from the Southern League.