In terms of promotion the league champions would go straight up into National Division Two while the runners up would have a one-game playoff against the runners up from National Division Three North (at the home ground of the club with the superior league record) for the final promotion place.

At the end of the season Cambridge made it two successive promotions in a row, finishing league champions just 2 points ahead of runners up North Walsham (who actually beat them home and away) and gaining promotion to the 2006–07 National Division Two.

[4] North Walsham were unable to join Cambridge in National Division Two as they lost their promotion playoff at home to the 2005–06 National Division Three North runners up Nuneaton.

[5][6] At the other end of the table, Bracknell were the first side to be relegated, going down for the second year in a row with just two wins all season.

North Walsham were the southern division runners up and as they had a superior league record than northern runners-up, Nuneaton, they hosted the play-off match.