The Wildlife Assessment Check is using geospatial data as outlined below.
Statutory designated sites
The Wildlife Assessment is using datasets on statutory designated sites for nature conservation in the UK. These are all published under Open Government Licence and are acknowledged here.
Local Environmental Records Centre (LERC) boundaries
The spatial data for LERC boundaries has been provided by the Association of Local Environmental Records Centres (ALERC).
Local Authority District boundaries
The spatial data for local authority district boundaries, published by the Office for National Statistics, is supplied under the Open Government Licence. Contains National Statistics data © Crown copyright (December 2017) and OS data © Crown copyright (December 2017).
Important Invertebrate Area (IIA) boundaries
The Wildlife Assessment Check is using spatial data for the IIA boundaries, provided by Buglife. The underlying data (e.g. habitat interest and key species) for the IIAs is not being used by the tool.

Important Plant Areas (IPAs)
The Wildlife Assessment Check is using spatial data for the IPAs, provided by Plantlife.

Species range polygons
The Wildlife Assessment Check uses range polygons for some species, listed in the table below. These polygons cover England, Wales and Scotland. The Wildlife Assessment Check uses the range polygons as location triggers and does not hold any species records/data.
Species acknowledgments:
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- Mammals: Mathews, F., Kubasiewicz, L., Gurnell, J., Harrower, C., Mcdonald, R., and Shore, R. (2018) A review of the population and conservation status of British mammals: A report by The Mammal Society under contract to Natural England, Natural Resources Wales and Scottish Natural Heritage. Natural England.
- Great crested newts: The range polygon for Great Crested Newt was produced using expert assessment by Amphibian and Reptile Conservation Trust, based on recent published and unpublished datasets and species distribution modelling.
- Rare amphibians and reptiles: The range polygons were produced by the Amphibian and Reptile Conservation Trust.
Mammals | Serotine bat
See range polygon map
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Alcathoe bat See range polygon map
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Brandt’s bat See range polygon map
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Natterer’s bat See range polygon map
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Whiskered bat See range polygon map
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Leisler bat See range polygon map
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Grey Long-Eared bat See range polygon map
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Nathusius’ pipistrelle See range polygon map
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Hazel dormouse See range polygon map
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Pine marten See range polygon map
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Red squirrel See range polygon map
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Wildcat See range polygon map
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European (brown) hare See range polygon map
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Common vole See range polygon map
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Polecat See range polygon map
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Harvest mouse See range polygon map
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Mountain hare See range polygon map
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Great crested newts |
See range polygon map
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Rare amphibians | Natterjack toad
See range polygon map
Pool frog See range polygon map
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Rare reptiles | Sand lizard
See range polygon map
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Smooth snake See range polygon map
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More: Wildlife Assessment Check |How to Guide | Frequently Asked Questions | Species guidance notes