Corsham Town made sure of a top-four finish in Toolstation Division 1 as they ended the campaign with a tenth successive victory.
Leading scorer Dan King set Corsham on their way to a 3-2 win at Shrewton United with a first-half penalty.
Dean Foot cancelled it out before the break but Jamal Chevolleau and King put the visitors back in charge before Michael Joy replied.
Bradford Town won 1-0 at Portishead but saw their outside promotion hopes dashed as second-placed Hengrove Athletic beat Warminster Town 3-0.
Unless they suffer a huge defeat in their final game at Elmore on Wednesday night, Bradford will end the season in third spot.
