“‘caravan’ means any structure designed or adapted for human habitation which is capable of being moved from one place to another (whether by being towed, or by being transported on a motor vehicle or trailer) and any motor vehicle so designed or adapted…”
“It may be necessary to take account (inter alia) of the degree of fixing of the structure on the ground, and to the degree to which any additions may have been made which may or may not have become part of the structure. We think too that in view of the sophistication of modern technology, which is capable of moving almost anything, it is not sufficient to show that a structure is theoretically capable of being moved from one place to another; it may be necessary to determine whether that particular structure in a particular location is in practice capable of being moved, having regard not only to possible damage to the structure itself, but also to the practical problems of access, trespass, possible damage to protected trees and so on.”