Kettering have three times been runners-up at this level and return to the league after an absence of five years.
Altrincham remain in the Conference after a third consecutive reprieve from relegation, following Halifax Town's demotion for financial reasons.
Woking's relegation ended the tenure of the Football Conference's longest serving club, completing seventeen seasons in the top-flight.
A total of 22 teams contested the division, including 16 sides from last season, three relegated from the Conference Premier, two promoted from the Northern Premier League and one promoted from the Southern Football League.
Both Boston United and Nuneaton Borough were expelled from the league for financial reasons before the season, resulting in Vauxhall Motors relegation and Redditch United's transfer to the Conference South being cancelled.