first crack the drivers rear wheel nuts and then jack up the drivers side rear wheel. Secure on an axle stand. Remove rear wheel.
look underneath and you will see a plastic cover with with a water drain screw in it.
remove the two locating plastic clips which secure wheelarch plastic guard
behind that there is a little plastic guard that you remove
Now you need to unbolt the brackets, one bolts in the chassis rail which should come undone, on mine you can see in the photo above (maiddle bottom, yes that was once a bolt) arusty bolt I had to grind off later, but temoving the plastic covers means you can get to the two bolts that go into the chassis, in the photo one is already out and the other nearly out.
Bolt in chassis in photo below.
once bolts are removed the assembly will drop down.
As said before everything's simple unclip and remove assembly.
As others have said plenty of oil as they will be stuck, I personally use 3 in 1 or plusgas. put planty on and go have dinner or a long brew before even attempting to pull things apart.
my advise is take loads of photos, get some tippex or white paint or marker pens to put marks on things before you unplug if you are unsure.
photos of the bracket I had to grind apart so I could put a new bolts in
and cleaned up a bit ready to go back on
Assembly as they say is opposite of removal.