The Trans Directory TranzWiki.net now has over 2,000,000 hits.
The comprehensive directory provides the names and details of national and local gender identity support groups; local police authorities and the levels of support each of them offers to the trans community; and relevant information for individuals and groups about trans people, education, the law, medical care and good practice.
TranzWiki was founded by Gender Identity Research and Education Society (GIRES) four years ago and is a vital resource. You can access it here