On my Nissan 200SX I was with direct Line. So before buying my Alfa I went online, and got a quote from Direct Line to insure the Alfa. '£490' they said, which was much less than i was paying for the Nissan, so I went ahead and bought the car.
Sold the Nissan and transfered the insurance over. 'We'll rebate you £28 for the final month of your policy' they said. Which was nice.
Then a month later the automatic renewal letter came through the door. 'Don't do anything, we'll automatically renew your insurance for you! Next year, your premium will be just £720' (!!!!!)
Cue a bit of shopping around, and after a whole 20 minutes online came up with E-sure and their quote of £420 with protected NCB.
So lesson learned, when the automatic renewal letter comes through the door, don't be lazy, shop around!