we (CArole NAsh) have been doing classic car schemes for donkeys.
Theres a few guidelines, i think we cover up to 92, 3000, 5000, 6000 miles per year, agreed value and £100 excess. REally good policies: I once saw a guy insure his cossie for £250! Cant beat that!
End of the day each scheme is a bit different so just have a scan around.