Worse than that if its the actual bit inside the headlight like i'm thinking? New headlight time, at least they're cheaper than the xenon ones at £74.
Which is inside the headlight itself yes? No parts avaliable for stuff at that level, new headlight only i'm afraid.
so the bit that actually holds the bulb ?
not usually available seperately from the full lighting loom, however you may be able to use one from the side repeaters of some early Renaults as they did those seperately, it may not be 100% the same though so might not fit, just chop one off at a breakers yard or try ebay