Joju wrote: Also, can anyone advise on whether it is better to classify the bus as a van or a camper? It is an unmodified transporter.
If it's a panel van then it will stay as a panel van on your UK papers, if its a Kombi it will come back as minibus (or whatever they call them now).
If you plan on converting it to a camper then you need to that and provide proof of the conversion, before they will put motor caravan on your paperwork. Might be simplest to register it as it is for now, get that hurdle cleared and then apply for a change later. There's some useful info already on here about how to get the log book changed to say motor caravan. Panel vans are subject to slightly different maximum speed limits if I remeber rightly...