Rear Lighat Fixings

mikecookie

After getting back from a trip last weekend I noticed that one of the screws had come out of one of the rear lights on the back of the caravan. No problem, I thought just tighten it up. But the screw was just turning and not tightening, so I took the
whole lens off and found that there a some rubber grommets/nuts that the screws go into that had fallen out leaving nothing for the screw to bite into.

Now the problem I have is that I cant find anywhere that sells the rubber grommet/nut and I have checked the local spares and servicing places with no luck. Does anyone know where I can get these, preferably in the Essex area but if not that will deliver?

The caravan is a 2003 Fleetwood Sonata Serenade