Be careful when comparing quotes from different comparison sites. Some do not quote the total price including interest if you choose to pay monthly. I found one insurer via these sites to be cheap but I had to click on 'visit insurer's website' to get a quote based on paying monthly. Even when I got the page asking for payment details (i.e.,my debit/credit card number!) they still hadn't told me the monthly figure or overall cost based on paying monthly. So I went elsewhere.