Also try all the specialists like Adrian FLux and HIC. They're all pretty helpful, but your number one rule is shop around!
I'm 27 with 2years NCB and a rather chequered driving history. I'm with Adrian flux on the mini and I've got it at £480 full comp for a car that is basiccly a race car. Not bad.
I pay £520 odd for the MKII GTi with 0 NCB and my history and that's with ELephant.
Nick