I think it is through the Royal Sun Alliance (but could be wrong) The broker is IAM Select - only open to IAM members though They promise to beat your renewal which they did.
The other alternative is do what I did 'when I were a lad'
Get a car worth £1.5-£2k and insure it third party fire and theft. Build up the NCD and go comprehensive then. Plus if they smash it (as most 17 year olds probably will at some point) make it clear it comes out of their pocket. Therefore no money, no repairs, no more car.
How many years no claim? Churchill no longer care about garage parking either anymore ...
I have maximum no claim, tracker, 4 cars insured (3 with Churchill), no points, increased excess level of £250 (in addition to compulsory £150) and married. Think that is all that matters for insurance purposes ...
likely your proximity to Manchester, Taz
I'm paying close to 800. Never ever claimed for anything, never had a point on my license. 16 years trouble-free driving. But live within 10-20 miles of Manchester = inflated insurance.
either that, or they've had spies out watching your driving... to be honest, I'm surprised you're not paying more