Insurance for 3rd car

[audifin]

I'm thinking about buying an old (15yr+) large estate as a workhorse to carry materials and rubbish when doing up our house. This would be 3rd car in the family and I don't have No Claims for the 3rd car.

What would be the cheapest way to insure the 3rd car? Some insurance companies offer Classic Car insurance for 15 year old cars, but I'm yet to find a competitive quote.

I've had some quotes for year 2000 Volvo V70, all in excess of £500... seems daft for a £500 car that is driven less than 1000 miles a year, bearing in mind I paid something like £350 to insure the A8

Oh and if anyone knows of a suitable car for sale let me know