Hi Dan,
Take off all the M6 nuts along the bottom of the facia (item 5) then the nuts/bolts 2/3 on the bottom of the quarter fixings.
Remove rear lights, bezel and number plate lights, disconnect cabling.
There are 3 x M6 nuts at the side of the facia only accessable with the rear lights out. Remove each side.
Remove screws Item 11 into clip 12 along top edge.
Carefully pry out facia one side at a time, to release it from the quarter panels. You will find a sneaky M6stud moulded into the facia just where the side trim meets the facia (in line with side markers) There should be no nut on them but you'll need to pry out the facia about 20mm to release them from the holes on the quarter panels.
Take care around the top of the facia next to the quarters as its a tight fit here too.
Once off you can get at the foam section, back plate 10 and the wiring loom etc.
If your thinking of painting the facia when its off, use a plasticiser to stop it cracking when you flex it back on.
Good Luck
Kind regards
D