I was with Admiral but this years renewal was a lot higher than Elephant (same company). One thing I did notice was that as you get closer to the renewal date the price was going up and up. It literally went up over £100 as it got closer to the renewal date, probably because they know you need insurance so try to screw you over that little bit more!
One thing that did annoy me with Elephant, phoned up, checked details (not changed) from an online quote and it came back £60 more. Guy on the phone said they would send it off for a 'price check', which means sweet FA in reality, as he couldn't figure out why the price was different.