I use Liverpool Victoria, Bournemouth for my "Fiat" and other cars cheapest and best insurers I have come across in a long while, also Civil Service Motoring Association, you may not be eligible for membership but worthwhile joining if you can. They use Britannia rescue, very good used them twice in about 35 years, faultless service at a very reasonable price.
The Fiat insurance is stunning, PM and I will explain in more detail