Any info would be greatly appreciated.

 

Simplistically all MB rear bumpers are fitted in the same way.

2 nuts inside the boot likely under the carpet that hold the rear blade section in place.
The tricky bit is the forward facing blades. These are held with up to 3 vertically positioned bolts 10mm.
These are accessible under the wheelarch after removing or prising the liner out of position. The final bolt is accessible from inside the boot and requires the boot side trim mouldings/carpet to be removed. These bolts are often partially hidden by wheelarch strengtening members.

Then just pull rearwards remembering to disconnect electrics if there is Parktronic / aerial etc

Sorry unable to attach pictures.

stuart