Mopar Muscle Association UK

One Broker for me now. They are great as a broker, based in Cambridge. Very personal service from a small office. I have the whole collection with them, including a daily. They do the insurance for the Shuttleworth Collection.
Had a claim recently and they were excellent, argued the decision from the insurer about a potential write off on my behalf whilst I was abroad, and they sorted out a successful resolution.

Flux just renewed cheaper than last year. I moved away from them for years but they seem good now.
One minor gotcha - I think they need pictures every year - check the small print.