Hi Smooth,
Check out the link PUK posted.
Then remember that it does not have to be inspected, change of type is done on the V5, to motorhome/camper (the section is on your V5). JUst complete and send back to DVLA, hey presto classified as a camper. Do the work to get it to insurance for a camper (no real work there) and your done.
What do you mean by their computers wouldn't recognise? Have you per chance typed your reg number into an online quote site that didn't recognise your reg number? If so, the online quote systems that use info in the search box taken from DVLA is car stuff, I have never got a van (commercial) reg number to recognise in one of those. Go to van insurance companies if you are doing on line, may still not recognise your reg, and fill in all the stuff like make/model etc that you are expecting to see.
If you want commercial insurance shop around, if you want a camper quote try Adrian Flux 1st, cheap and customer service great. Could also try Just Campers (do large majority of VW campers, but do others) although found them more expensive and customer service wasn't as good.
I would like to know what you plan to do with your motor, is it going to be on commercial or camper? I am going to look into camper taxation, as from that forum they say it is cheaper to tax and if so I am going to change my V5 as well. I take the cheaper taxation with a pinch at this point though, as whenever I taxed a VW camper it was the same price as my current drive of the time, which was a 825D rover, great pulling power, good on the diesel and a shitty body, but she could pull a transport with a VW on with ease. The body gave up in the end, but not the engine, good old girl she was
Mark...smelling salt in the air, is the surf up
Let me/us know what you decide, there are options there so look into them.