This dataset comprises polygon data showing Sites of Nature Conservation Interest within Bristol. Sites of Nature Conservation Interest (SNCIs) are sites which contain features of substantive nature conservation value at a local level. The sites are designated through a Local Sites Partnership (LSP), using an agreed set of criteria. The LSP for the West of England, is formed by ecologists from each of the unitary authorities, Avon Wildlife Trust, BRERC, Natural England, Forestry Commission, Environment Agency, and the local RIGS group. These sites then receive a level of protection through local planning policy, in-line with PPS9.