Hemel Hempstead Town reached the play-off final after two relegation reprieves in the previous three seasons.
Bedworth United were relegated straight back to step 4, while Kettering Town continued their fall to Division One Central.
Woodford United lost all their matches and were the only club relegated from division this season.
Semi-finals Final Division One South & West consisted of 22 clubs, including 16 clubs from previous season and four new clubs: Poole Town won the division in their second season in the league, and were promoted to the Premier Division along with play-off winners Hungerford Town.
Sholing resigned at the end of the season for financial reasons, and dropped down to the Wessex League.