From that article: "The vehicle V5 must display a Body Type descriptor that most accurately reflects how a vehicle appears in traffic, as a vehicle’s Body Type is used to assist the police and other enforcement agencies with an obvious outward description of the vehicle."
This is understandable I guess. In our Council area, new build houses without a street number, have to have a name that helps to locate them for emergency services. Therefore 'Dunroamin' or 'Ned's Gaff' are not acceptable. Church View Cottage, Oak Tree House, Gallows Hill Bungalow would be fine.
Two miles away in the next council area, anything goes - w****r Towers, Fir Kew Hall, etc.......... Much fun was had via email naming our new build.