Just taken a few pics for you lot, its just an
Ibiza Sport but the same should apply.
The start...
Take your trim tool (wide one works best) and wedge it inbetween the bumper and the grill
What you need to do is pop the securing tags out (you can see location in latter pics) all the way around.
Now pull the trim out to here
and then pull forward
thus..
To remove the fog light itself, no screws, it just rotates, from here...
to here..
then pop out
To refit reverse the above, little bit of silicon lube may
help on the tage to pop it back in. Hope this helps.