UKGovcamp is the free, annual 'unconference' for people interested in how the public sector does digital stuff.
Govcamps are events where the participants lead the agenda in fact, there isnt one until people make suggestions for what theyd like to talk about at the start of the day.
Its free to attend
There are no keynotes or sponsor pitches
Its open to anyone: public/private/whatever sector, whether this stuff is your work, or youre just passionate about it
Its run to the hippy principles of Open Space events, so people wander in and out of sessions, tweet, blog and take photos all the while