I was with CIS for a year, only because they offered international coverage at no extra cost, and none of this green card 90-day stuff either. I was working in norway and had my Punto over there for 6 months 2 years ago.
Now I'm with Elephant, who are a part of Admiral, who I was with a few years back. My last car was written off and they dealt with the claim quite well. In the end I'm glad it was written off as I got a good price and got my Punto. Otherwise I don't know what I'd be driving by now... Oh and that accident wasn't my fault, otherwise I'd be paying a bit more without full NCB.
Oh, and now that I've been driving 10 years, have just finally acrued a full NCB, and have only a Punto ELX, its £300ish fully comp. The "Quote me happy" Norwich Union can't quite match it, nor e-sure. But it certainly pays to look around.
My fiancee's policy (Eagle Star) still has my accident on the policy, but mine doesn't. Only because they count the last 5 years, where as most are the last 3...
Punto Mk2 ELX 8v in Teseo Blue with the electric Sunroof and CD changer, doing 50mpg whilst passing down country lanes