You can submit an application to the DVLA and ask them to change its classification. You will need to fill in section one of the V5C and submit it with a V1006 form. You must include photos to show the van has two or more windows on one side of the body, seats and a table, sleeping accommodation, cooking facilities and internal storage. The DVLA will also require photos of the exterior and numberplate (front, rear and both sides), along with a photo showing the vehicle identification number (VIN) or the chassis number. On the back of each photo, write a description of what the photo shows, the date and the vehicle registration number.