I got this from the Big Green Gathering organisers today.
Dear Friends,
following threatened injunction proceedings in High Court by Mendip District Council supported by Somerset & Avon Police and having taken extensive advice from a prominent QC and other eminent lawyers, the directors of the Big Green Gathering have been left with no other option than to voluntarily surrender the license for the Big Green Gathering 2009. The event will now not take place and the directors’ advice and request is that no one intending to attend the event should attempt to do so, as the site is now closed and they are likely to be turned away by Somerset Police. It is our intention to avoid any form of confrontation or public disorder in regard to this and it is our earnest hope that all those involved will follow this advice. It is with great sadness that we have been forced into this position and we express our profound apologies to all those concerned.
The Directors of The Big Green Gathering

Undercurrents would have been showing our films at the festival but the Police said
Police are warning people planning to attend the 'Big Green Gathering' 2009, that the event has been cancelled due to a number of contributing factors that could not be overcome.Today (Sunday July 26) organisers of the 'Big Green Gathering' surrendered their licence to Mendip Council.
 http://www.avonandsomerset.police.uk/LocalPages/NewsDetails.aspx?nsid=17222&t=1&lid=4