Not really a comparision but,
My '52
MCS (
JCW Brakes, but not the full kit) with Norwich Union, fully comp. im 31, 5 years no claims, but 1 accident about 18months ago (protected no claims), 30K business miles
£750, which, while expensive, is the cheapest I can get, doing high business miles and having a write off is not great for getting low premiums