I one built a Triumph motorcycle from an old log book my dad had in a drawer and no parts whatsoever, scrounged all the parts from freinds and family, secret is to change one part at a time, frame or chassis , then send them the new engine number a week later )
hey presto new vehicle without having to resort to a Q plate.
Erm wonder if if its possible to dodge taxing it, ie over 25 years old with this method ?
might start looking in scrap yards for really old Jeeps )