Easy job. Jack up rear, remove wheels - drill out rivets holding bumper panel to wheel arch. From inside boot, one nut each 'corner' of boot (remove trim panel) - one side you'll need to unplug aerial lead. Centre of inside - remove rubber covers, using extension on socket spanner under two more nuts. Whole bumper assembly pulls back. Its not too heavey, but carefull how you put it down. Take opportunity(which is why I took mine off) to install reverse sensors.