[silverbmwz3]

Take a look at confused.com, there are a few other search sites also which if you go to them all cover about 95% of the market. I wouldn't advise shopping on price alone though. My insurance with admiral was one of the cheapest on confused, privelege weren't even listed in the results however privelege:

i) were cheaper
ii) Offered interest free payments
iii) Covered all my extras inclusive more or less in the price (admiral wanted them listed, charged extra premium, then wouldn't pay out for them!)
iv) Pay for a brand new car with the extras in first year (as far as I can tell)

It pays to read the policy wordings - I did this a bit too late, after I'd taken out the Admiral policy so got hit with a small cancellation charge when I switched to privelege but was still cheaper and better cover!