Lincoln have been relegated from the Football League, with a 3-0 defeat at home to Aldershot seeing them fall out of npower League Two.
The Hampshire side struck three times in the second half at Sincil Bank to seal the fate of the Imps, with Danny Hylton scoring from the penalty spot after 57 minutes and Luke Guttridge netting twice.
Barnet had started the day in the relegation zone but Izale McLeod's penalty at the start of the second half was enough to see them beat Port Vale 1-0 and condemn Lincoln to relegation alongside Stockport.
At the top of the league Chesterfield were promoted as champions in front of their own fans after two goals in the final 15 minutes helped them beat Gillingham 3-1.
Danny Whitaker gave the Spirites the lead after 54 minutes before Cody McDonald equalised for the visitors, but Chesterfield hit back with goals from Jack Lester and Deane Smalley to seal top spot ahead of Bury, who were held 3-3 at Stevenage.
The Shakers came from behind twice at Broadhall Way after goals from Scott Laird and Craig Reid were both cancelled out by Steven Schumacher and Nicholas Ajose respectively.
Schumacher fired Bury in front in the 70th minute - but Stevenage then drew level through substitute Ben May.
Wycombe will join Chesterfield and Bury in League One next season after coming from behind to win 3-1 at home to Southend.
Anthony Grant gave the visitors the lead after 15 minutes but strikes from Scott Donnelly and Ben Strevens put Wycombe ahead before the break. Scott Rendell's goal after 53 minutes then secured third place and a return to League One for the Chairboys at the first attempt.
Shrewsbury were the team hoping to leapfrog Wycombe into third and they did all they could by beating Oxford 3-0. Mark Wright opened the scoring after 52 minutes before David Davies doubled the advantage and Lionel Ainsworth sealed the win in the 89th minute - but a play-off double-header against Torquay beckons.
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