Someone has clipped the drivers side wing on my vRS and left a small scuff and knocked the head light from the bumper ... in terms of re-fixing is this a bumper off job ?

You can easily remove the headlight with the bumper in place,there is a guide on here,the accident may have damaged the headlight mounting bracket but that is held on by 3 or 4 bolts if i remember correctly & again isnt a bumper off job.

I meant the fog light not the head light ... apologies

The drivers fog is a bitch to get at.

Only route i found is going in via the plastic cover next to the light (not the colour coded bit around it)

You can also access it by removing the headlight and the pannel the headlight sits on but its just as awkward.

You cannot access it via the wheel arch as the washer bottle is in the way

Drop the under tray, you will have lots of access then.