The nature conservation agencies have a duty under the Wildlife and Countryside Act 1981 as amended, to notify any area of land which in their opinion is ‘of special interest by reason of any of its flora, fauna, or geological or physiographical features. Such areas are known as Sites of Special Scientific Interest (SSSIs). In 1989 the then Nature Conservancy Council published guidelines for the selection of biological SSSIs. Since 1991 the Joint Nature Conservation Committee has been the focus for the production and revision of the guidelines.
Click here for more information.: Guidelines for selection of biological SSSIs