Harrow Borough were champions, winning their first Isthmian League title.
Windsor & Eton finished first in Division One achieving the second promotion in a row.
Corinthian-Casuals were excluded from the league after new groundsharing ruled were introduced.
The Premier Division consisted of 22 clubs, including 20 clubs from the previous season and two new clubs, promoted from Division One: Also, at the end of the previous season Leytonstone & Ilford changed name into Leytonstone/Ilford.
At the end of the season Staines Town were demoted to Division One due to ground grading, thus, Tooting & Mitcham United were reprieved.