Ended up buying an alfa gtv instead of a coop but still read the site and this section helped me halve all the quotes i got so far which were over a grand. Went with greenlight and they've been cheap, easy to contact and prompt with letters etc. However, I'm keeping my other car and transferring the NCB across. I've had my own policy for 2 1/2 yrs now with no claims. However because i've had 3 different cars and all different insurance companies i can only actually use 1 NCB. This came as a surprise to me and i think i (sort of) understand why but the fella at greenlight sounded like he thought i was retarded.
I then rang about another query and again, the same bloke just sounded plain annoyed. I don't know much about insurance procedures but i'm sure i'm not that slow that it's a royal pain explaining it?
It seems insurance companies are only happy if you change your car or insurer exactly at the point of renewal. Anything else turns into a headf*ck and you inevitably end up paying more. As for the shafting you get for running two cars.....

Rant over, feel better.