Hi Will, I assume you mean Light Detection and Ranging. I did one module where we used it and found the following sites pretty good. Mostly from the US I'm afraid - guess those guys have a bigger market and more investment than us here.

http://atm.wff.nasa.gov/

http://lidarnews.com/

http://lidar.cr.usgs.gov/

http://www.lidar-uk.com/