Adders started the day a point behind Coventry Sphinx but earned a 2-2 draw at home to Feckenham to win the league on goal difference.
Elsewhere,Alveston drew 1-1 at home to Bridgnorth Town,Nuneaton Griff won 1-0 at Coleshill Town and Coventry Copsewood won 2-0 at Meir KA
In the first division,Kenilworth Town won 2-0 at Fairfield Villa.