I have recently trawled the brokers and comparison sites, as well as searching the archives of groups like this, and ended up with the Adrian Flux
Insurance Group.
Adrian Flux people took time to find out exactly what I needed by asking the right questions and offering good advice. If there was anything I was unsure about I phoned back, and they were always happy to listen and explain.
I got a discount for my car
insurance No Claims Bonus, but didn't have to transfer it from my car policy.
A discount for belonging to the C&CC
My van (Converted Transit 230 Minibus) was rejected by almost all the minibus
insurance groups because of the modifications, But Adrian Flux were very flexible and accommodating.
Best of all it's cheap!
Fully comp, European wide cover, including European Breakdown relay and recovery. for just under £300.