ok, considering i did this yesterday i'll talk you through...
- take undertray off if you have one (easy)
- lift bonnet and remove the torx screws (i'm pretty sure they're torx, if not they're phillips head) holding on the 2 "fin" bits of trim on the inside of each headlight. There should be 2 screws per side. These bit of trim then just push fitted so give them a yank/prise (upwards) and they'll come free.
- Remove torx screws from in front of/next-to the bonnet release mechanism and the newly uncovered torx screws which were under those bits of trim you've just removed.
- it's now held on just using the screws in the wings. put something under the bumper just in case when you remove the last screw it comes free.
- look in the wheel arch and there'll be a screw holding the bumper to the body of the car towards the top-end of the bumper. remove.
- now the first fun bit. You'll need to remove some of the wheel arch lining because you need to get access to 3 torx screws which live underneath the top of the bumper and screw in to the wing. most of the screws in the lining should be fine but if there are any rusted stiff then it'll be the one down by the floor nearest the front of the car. Even if I'd have got the screw out the strut was so corroded it wasn't worth re-attaching anything to anyway so i just cut it off - it can't have been providing much support as it was so it's no great loss. simplify and add lightness
- Once you've got the screws for the lining out you can ease some of it out of the bumper/wing and get a look UP at the top of the bumper. There are 3 torx here to remove (at least on the drivers side). The first 2 are easy. the third is just in such an awkward place in the end i had to remove the air intake next to the foglight, remove the oil cooler air intake behind that and THEN attack it.