To unlock division one go to the main menu and press:
Select, Select, Circle, Circle, L2, L2, Triangle, Triangle, Select, Square, Select.

To unlock division two go to the main menu and press:
Select, Select, Circle, Circle, L2, L2, Triangle, Triangle, Square, Circle, Select.

To unlock division three go to the main menu and press:
Select, Select, Circle, Circle, L2, L2, Triangle, Triangle, Square, R1, R1, L1, R2.

To unlock conference go to the main menu and press:
Select, Circle, Square, Triangle, L1, L2, R1, R2, Select, Circle, Circle, Circle, Square, Triangle, Triangle, Triangle, Square.

These cheats will be confirmed with a sound, and the extra divisions can be found under the english premiership.