Last year I paid £760; this year's renewal quote is £1,135. I've tried the comparison sites, and the cheapest is about £970, but for equivalent cover (Europe, Legal, Protected NCB) it's about £1,100. Lexus Insurance want £1,220. I thought I'd try Adrian Flux, as they have their own dedicated page on the forum - £3,300.
They did say I should phone them to see if they could improve on that!