thing is i use one of those comparison web site and got asked:

Q How much 'No Claims Bonus' do you have?
A 9+

i didnt see anything saying "is this NCD from another car that you own and insure"

another small print note i bet.

in response to the person that mentioned multi-car insurance, when the ST was due for renewal 2 month ago i asked and the cheapest i got (for the ST only not incl. the berlingo) was double my previous and current premium.