Over their time as the JAMs and the KLF (and after this) Bill and Jimmy have worked with numerous other people from both the Music and Art worlds and other fields. There've been the obvious big names like Tammy Wynette and the Pet Shop Boys, and then the more obscure, such as Gimpo, Nick Coler and Ian Richardson, Mark 'Spike' Stent, Scott Piering, etc, etc. A completist list of collaborators together with mini-biogs, can be found at:
Much more infomation on many of these people can probably be found in many Rock Directories, or on the Web, but a few of the more minor collaborators have descriptions in both the Manual and in the White Room script. The following three questions deal with collaborators Gimpo, Garry Glitter and Ford Timelord.