Saddhaloka is the current chair of the College of Public Preceptors. He recently posted some information on the Buddhist Centre online about reviewing how the Preceptor's College works. And in doing this, he also gives a pretty good overview of how the Triratna Buddhist Community is interconnected.
If you've ever wonder about the current structure of information flow and friendships, or just want to stay in touch with things, you might enjoy reading this and downloading his map.