safari 5000 spot lamps

I have safari 5000 lamps on my truck, but ive broke one of the casings, does anyone know if or where i could obtain just a replacement casing as opposed to buying a whole new lamp for £120

or does anyone have one laying around either a working one or one that needs a new bulb etc

would appriciate any help

i would take em off ya "truck" and put em on your landrover!!