 In England, the body responsible for designating SSSIs is Natural England, which chooses a site because of its fauna, flora, geological or physiographical features.Natural England took over the role of designating and managing SSSIs from English Nature in October 2006, when it was formed from the amalgamation of English Nature, parts of the Countryside Agency, and the Rural Development Service., there are 41 sites designated in this Area of Search; of these, 26 have been designated for their biological interest, 4 for their geological interest, and 11 for both.