With reference to Rob and Tina's post (above) is absolutely right but to you may be getting confused with touring caravan registration. To add a little further information, a caravan built from 1992 onwards will have a CRIS registration number which is etched on each of the windows but a FC doesn't have the same requirement.
The OP knows about CRIS as they used to have a caravan.
------------- XVI yes?
As well is two words!
How does a sage know everything about everything? or does he? or does he just think he does?
Remember, if you buy something you bought it, not brought it.