Is that a pre-facelift you've got there ruairi? If so then it's much easier to change the headlight bulbs on them. I ended up having to take the bumper off my facelift to change mine.
I think you can get away with removing things like the battery and other bits and pieces, but taking the bumper off is really simple and you can perform some other maintenance while it's off; I found a load of dead leaves and crap blocking up my SMICs so had a chance to clean all that out and tighten the jubilee clips :thumbsup: