1. You need to remove the rear lights to get to the top plastic fixings.
2. There are more plastic fixing on the bottom of the bumper.
3. You will also need to remove both side strips, one bolt under the wheel arch and two inside the boot, per side.
4. Then disconnect the wiring to the rear numberplate light.
5. There are also two bolts per side on the inside of the bumper where the lower splits connect.
I think thats it - quite hard to explain exactly where things are but once you start pulling things off its fairly self explanitory!!!
Should take about an hr to remove.
Matt.