my unos had a flush boot for about 5-6 yrs now and i've never moved the boot light so it still shines up the boot and i've never been pulled and neither has my mate who owned the car before! but at MOT time i just unplug the boot light out the bumper and selotape it to the rear bumper so its taped shining on the number plate. the MOT man can't fail it cos at the time of MOT testing its all legal