We'd recommend sending it to a specialist car auction to help it achieve its full value. Online auctions like Collecting Cars and The Market are proving to be very popular, with cars appearing to fetch good values. Alternatively, you could try selling it yourselves on a website like eBay. Putting a price on such a car is difficult, though – the Defender is a niche model with a huge following, but prices vary dramatically. The good news is that, unless it's completely rotten, it's probably worth quite a bit.