Below you'll find listings from The Land Rover Orphanage - a major UK eBay seller & others- we used them extensively during the restoration, they probably have the part you're looking for right now.
To this day, I still check the listings for some rare Land Rover part or Range Rover print ad from the 1980's. The easiet way to get the latest listings is to use an RSS feed of your search query. It's really easy to do, just go to eBay, do a search and subscribe to the results page in your RSS reader, I like Bloglines, but Google Reader is good too. If anyone has any questions on how to do this, please feel free to contact me.
Here are the eBay RSS feeds I subscribe to: