Same reason why you cannot have two vehicles and full no claims bonus for either, I drive a Merc and Beemer, like you only one at a time,.. but I've full NC bonus (9 years) on the Merc, while the Beemer has to be in the wifes name and I'm named driver because the insurance Co will not grant me full NCB on both cars ??? I'm the one who does not have accidents, not the vehicles, therefore, I should attract full NCB on whatever and how many types of vehicles I drive. (or, should I get a motor dealer policy?)and the IC believe there giving ME A SERVICE...
Charlie.

;(