I'm with Sky Insurance now, Flux last year. Both very good service, no dodgy call centres and know what they're talking about.
Is yours still standard apart from exhaust Andy? If it is and you're going to mod more this year, then I'd get some quotes from some modified specialists as quoted in a few posts above as they could work out cheaper than insuring a standard car with the everyday companies, who will then rape your wallet when you add mods.
Mine was £780, 5yrs NCB protected, 12k miles and all mods declared.