The British Pteridological Society has new website -worth looking at.
http://www.ebps.org.uk "The British Pteridological Society, a society for fern enthusiasts
The Society was founded in the Lake District in 1891 and soon became the focal point for fern enthusiasts throughout the British Isles. Today it continues to provide a wide range of information about ferns, through its website and forum and by publishing regular journals, leaflets and books, and organising formal talks, informal discussions and outdoor meetings. The international membership includes those interested in gardening, natural history and botany, both amateur and professional. It is a friendly society run on a voluntary basis.
The objects of the Society are to promote all aspects of pteridology by encouraging the appreciation, conservation, cultivation and scientific study of ferns, horsetails, clubmosses and quillworts through publications, meetings, the provision of grants and other appropriate means. "