Collingham Reserves moved up to fourth after edging a seven-goal thriller at Chesters.
Matthew Asman, Fraser Hallam and Connor Walsh netted for Chesters, who led 1-0 at half-time.
Sam Lowe hit the consolation for RHP Social A as they finished second-bottom after a 6-1 defeat at Muskham.
Joseph Gibson struck twice for Laxton Athletic as they shared eight goals at Robin Hood.
Will Hamilton and Craig Jewett were on target for the visitors in the 4-4 draw.