1. Open boot lid and remove, floor/toolkit/spare wheel.
2. Remove the boot side liners on both sides ( the little plastic clips just pull out - go on....... give them a good hard pull!)
3. Remove the clips retaining the black plastic "scuff guard" covering the bottom of the boot entrance (there is a cut out for the boot lock latch with a little rubber edging on it) and then remove the plastic guard.
4. Remove both rear main tail lights - remove the 2 black plastic plugs to gain access to the retaining screws. you might find that the lights are difficult to remove, you just need to work them free, the 2 screws are the only things u need to remove. Also remove the bulbs after you have removed the lights
5. Go underneath the car - you will see about 5 tangs from the bumper, these are retained by black plastic push in studs - remove these, they will be brittle and break .
6. If you have a good look where u removed the scuff guard you will see about 4 (?) nuts - these help retain the bumper - you will need a deep reach socket for these as the bolt is very long.
7. In the corners of the boot ( where u removed the boot liners) you will see a little white square/circle of plastic about 7mm wide, this square/circle has 4 little tangs/barbs coming off it - squeeze these flat with some pliers and push the square to remove it from the body - at the same time grab an edge of the bumper opposite the square and pull outwards a little as this makes it easier - do the same for the other side. Now remove the last 2 cross head screws securing the bumper by the rear wheel arch top
8. get a blanket or something on the ground under the bumper to protect the bumper if u drop it!!!, have a good look around the bumper and check that all is loose, now just pull it free from the body, BUT only pull it free a tiny amount - have a look and see where any edges clip in/go under etc as it will save you problems later! If possible get a friend to help u to remove the bumper.
refitting is a straight reversal of removal - EXCEPT for the little white square with the tangs - you need to extend the tangs after fitting to prevent the bumper from moving away from the vehicle body.
Thanks to Mat Clawley for this guide!