Hi!
If you asked about 4 months ago, I would have told you to go to my site (www.lightning-seeds.co.uk) as it did have the most complete discography on the Lightning Seeds on the net including the rare stuff. But that section is not up at the moment due to my old web server deciding to close their services down.
It is going through stages of a re-design at the moment, so if you are interested, pop along to have a look. Certain parts will be updated and added gradually.
regards,
Paul