Removing the Rear Panels...

Using a Torx T25 screw driver remove the three bolts just under the boot, there are two more just either side of the lower valance.

 

There are two longer bolts just in front or the rear arches that need removing.

Pull the wheel arches backwards to un-clip them from the trid and then slightly out to clear the fixings when you pull it backwards away from the car. This is best done with two people to avoid scratching anything.

Refitting is the same in exact reverse.