See Stroud Community TV film of some of the 2013 Festival - this year will be two days and with even more to do and see: http://stroudcommunity.tv/seed-festival-hawkwood/ and other Seed Festival films here.
Here's some from their website: Hawkwood’s Seed Festival will focus on the sectors of society that are
equipped to make the greatest difference and lead the way forward -
business and the arts.
Seed Festival 2015 will feature thought leaders from local, national and
international arenas who are advancing the latest innovations in the
mitigation of and adaptation to climate change. Our debate will reveal
the resulting social impact and show how businesses who are on the
cutting edge of change can be aligned with social action, arts and
Creative support, road maps, toolkits for our future world and lots of
fun in beautiful surroundings are included in the package!