Ouch. I'm hoping that comes down for you over time.
I just played a little game with moneysupermarket to see if I could get quotes that high. It proved harder than I would have thought.
They always say a small engine helps reduce your premium so the game begins with the largest engine possible; 8.3 litres of Viper. Surprisingly only £1570, despite pistons the size of small continents. What about something a little more focused, say a Lotus Exige 260? £1725. Still way off, I need something prestigious. Ferrari 612 Scaglietti F1 comes to £2660. Ultimate luxury and speed? Bentley Continental Speed GT comes in at £2900. And then I have it, £140k worth of Ford GT, £3730.
But can I go further, is it possible to break into five figures? Well no Veyron in the list (nor XJ220 either ), but I do spy a Ferrari F50. £9845 to insure £400k worth of Italian lust isn't too bad really. All other insane supercars are giving me the same figure so looks like no five figure premiums for me.
At least I know if I sell my car I can afford to insure a Ford GT. Now I just need someone to give me one.