Virgin are pretty good.
The other ones that I've heard do godd policies for classic / show cars are Sureterm direct 0845 2020230
www.sureterm.co.uk
Heritage 0845 811 8118
www.heritage-quote.co.uk
Lynbrook also do a policy that allows you to buy backthe car if written off, insurance includes spare parts, and etra payment to allow you to find another if the car is written off, allows you also to self repair. Tel 0845 1304662
cheers
steve