An interesting discussion which highlights to me the great differences between the US and the UK in such matters. In the US we have a very strong legal and cultural tradition that people have a right to follow whatever spiritual practice suits them, and should they choose to organize themselves into an entity such as a church, temple, grove, or whatever, they are entitled to the legal presumption that they are engaged in "*fill in the blank*" practice and entitled to the same tax status as traditional churches. Of course, that is not to say that there is equal popular tolerance and acceptance for all paths as a matter of course. I have friends in ADF who are "legally" recognized clergy, as well as friends who minister to congregations that are loosely Christian-based. Of course here, as in most places, the strongest opposition to minority paths comes from fundamentalist groups who believe that they have the one path.
Government entities do recognize Wicca as a religion. In 2001, the revised edition of the U.S. Air Force Personnel Data System (MilMod) included Dianic Wicca, Druidism, Gardnerian Wicca, Pagan, Seax Wicca, Shamanism, and Wicca. Not only that, the Military Chaplain's Handbook acknowledges Wicca within its pages and outlines procedures for interacting with Wiccan and Pagan soldiers. http://paganwiccan.about.com/od/yourleg ... Pagans.htm
Although I consider myself a fairly well educated person in many matters, I am constantly reminded how little I know about cultural religious/history in Europe and the UK. I am currently reading a fascinating book "Making Haste from Babylon" which deals with the cultural and economic forces underlying the Pilgrim voyage to America. Highly recommended.