Ok so I have let the side down here. I was very rushed trying to get this done so didn't really get chance to construct a guide. I was doing this in heavy rain. I will be removing the bumper again to modify the lower grill when we have some better weather so will do one then.
All I will say is that it was very easy to to.
I removed the headlights (guides available but literally one screw each and a couple of clips and wires of course) and then the upper grille using TDCIST guide. For the bumper, I started by taking out the 2 screws in the wheel arch lining which were connected to the front bumper. (Hex screws). I did both sides of the car and then went back to undo 2 (10mm I think , if not 8mm) bolts which were holding the bumper to the wing. There are also a could of plastic clips I between these bolts to pop through. Once this was done I undid the screws holding the undertray to the bottom of the bumper (3 I think) and after that it was just a case of undoing a number of clips across the top of the bumper/upper grille area. Don't forget to reach down and unwire your fogs! If you go easy and pull gently you can get a feel of where it is fastened. I am no professional and did this with no guide in less than 30 minutes. I had a friend to help hold the other end of the bumper.. Good luck (not that you'll need it).