Shop around for insurance. I found a massive difference in prices when mine were due for renewal. You need to phone up too, online quotes were massively different from those I got over the phone, even from the same companies. It takes ages, and it means phoning the same companies over and again to get them to price match each time you get a new best price. In the end Footman James, and RH insurance came out best for me. I managed to get the Jaguar covered for less than half the renewal price I'd been quoted.