The RFU was planning to introduced a new professionalized format of the second division for the 2009-10 season which would lead to widespread league changes throughout the English league system including National Two being renamed National One and being increased from the 14 teams to 16 teams – a decision they made halfway through the season (more information on these changes is provided in the Divisional Changes section below).

[2][3][4][5][6] At the end of the season Birmingham & Solihull made an instant return to the (newly named) 2009-10 RFU Championship.

At the bottom of the table Waterloo, Mounts Bay, Southend and Westcombe Park were relegated with Westcombe Park and Southend dropping to the 2009–10 National League 2 South and Waterloo falling to the 2009–10 National League 2 North.

[8][9][10][11] The relegation of Mounts Bay was particularly potent as it led to the club going out of business in June 2009 due to spiraling debts and an inability to cope with the increase of professionalism in the game.

[12][13] Halfway through the season the RFU proposed to have a total restructuring of the league system.