Cacophany UK is the list for anyone with an intrest in Discordian style pranks and general fun to get together with others, air ideas, and arrange meetings- in short, we're the UK branch of Cacophany, and you should see the site at http://www.cacophony.org/ for more details about the general idea.
Sadly, I can't actually arrange much myself (health problems) but I want to try and enable others to do so. Join, have fun, and get something together- big or small, it doesn't matter. Feel free to share past experiences or the vaguest future idea.
And don't forget to pack your Fnord and Thursday hot dog.