As i've been doing a few projects with Drupal recently I've set up a google group for people in the Bristol (UK) and surrounding area:-

http://groups.google.com/group/bristol-drupal
For anyone wondering if this means i'm deserting Plone, the answer is no - i'm also working on a couple of Plone projects too! I will post an article when I get time outlining my experiences of both - comparing and contrasting the development.