Does any of the above gents insurance's for a bog standard cars, I find that if any car is even slighty different from standard e.g. wheels then you might not be adequatly covered and insurace companies love to wriggle their way out of paying up should anything go wrong.
I use Adrian Flux (broker) and although my car is far removed from an original 33 my costs are quite expensive, everytime I change something its worth calling them to let them know.
Fully comp 3000 mile limit (including european cover for Spa visits) garaged, 41yrs old, full no claims, GU post code, costs me £443.00p.
Admittedly I have not shopped around this last year but if any of you do have mods and your insurance companies know then I think I might give them a call.