As STMO123 says, it pays to shop around every year.
Last year my partners quote was £207 for fully comprehensive cover in her 3 litre Omega with all the protection you can think of. She is 36 years old and has a 19 year accident and conviction free driving record, and she has never claimed on any insurance policy in her entire life.
For some reason, this years renewal for her was just shy of £470.
When I queried the massive price hike, I was told that the reason for such a big increase was because other people were having accidents.
My response to that was "So let me get this straight, even though my partner has just accrued another year of accident free driving, her insurance has more than doubled in the space of a year because other people do not know how to drive?"
The answer I received was a plain yes

Needless to say, her current insurers will not be getting our business next week when the insurance expires.