i've cable tied mine in place
before i fitted the bumper to the car
put it in the locating "area", fit the grill, offer the fog lamp upto the grill and you can cable tie them in position
mine have been like that for a couple of thousand miles now and gone thhrough an MOT.
i hardly use mine, so couldn't justify the £80 each
for the
ibiza OEM unit
IIRC, its the fogs of an Alhambra i think that fit
IIRC, Aimez has fitted "non-
ibiza" fogs to her facelift bumper, check out her readers ride thread