nonbinary.org - Nonbinary gender visibility, education and advocacy network
Think Outside The Box - a national campaign for and by non-binary gendered people
neutrois.com - information (and forum) for neutrois-identifying people
bigender.net - for those who straddle the gender binary
Androgyne Online - all things androgyne - links and info
Androgyny RAQ - Rarely Asked Questions - a collection of articles
What Is Gender? - support forum for trans, non-binary, and significant others
GIRES - Gender Identity Research and Education Society
The Gender Trust - UK charity for trans and genderqueer/questioning people
Gendered Intelligence - supporting younger trans people and gender awareness
The Intercom Trust - LGB&T people and communities in the South West peninsula
LGBT Collective - The Intercom Trust's Groups & Communities hub
QwesT FTM - a national support group for FTM folk, based in Somerset
Proud2Be - a national LGBT support group holding monthly social evenings in Totnes
Reddit Genderqueer - collection of discussions on genderqueer issues
Christie Elan-Cane Livejournal - non-gendered blog
Autostraddle - lesbian news and articles site, often has good trans-related stuff
safe2pee.org - a resource for finding safe alternatives to traditional public bathrooms