ok, here are some pics-
3 or 4 behind here on the rear bumper-

reachable by the side panels inside the boot, 1 can be seen here -

the main bolts are reachable under these bungs under the carpet in the boot (2 for each side)

front side nuts are same place as the back and reachable by taking out the arch liner and reaching behind the wing

these next 2 pics are not very clear but theres 4 main bolts for the front bumper (same as the back)reachable under the car
hope this helps, its quite easy really